Consulta: subjectFacets:"Logit"
Registros recuperados: 33
Data/hora: 10/06/2024 02:19:10

Effect of Policy Interventions on Food Security in Tigray, Northern Ethiopia
Provedor de dados: Ecology and Society
Autores: van der Veen, Anne; Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente; veen@itc.nl; Gebrehiwot, Tagel; PhD Student, University of Twente, Faculty of Geo-Information Science &amp; Earth Observation ; gidey17146@itc.nl.
Following the design of a conservation-based agricultural development strategy and food security strategy, the Tigray government has implemented different pro-poor development programs over the past years to address the problems of food security. This study attempts to investigate the effectiveness of government policy interventions at different scales addressed to improve food security. Food security both at the regional and district level was investigated by deriving food balance sheets for the period 2000-2008. An empirical analysis based on a logit model was also employed to analyze household level food security status. The results of the logit model reveal that government policy interventions such as water harvesting schemes, employment generation...
Tipo: Peer-Reviewed Reports
Palavras-chave: Effectiveness; Food security; Logit; Policy.
Ano: 2011

Simplified Marginal Effects in Discrete Choice Models
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Anderson,   Soren T.; Newell,   Richard G.
We show that after a simple normalization of explanatory variables so that they equal zero at some desired reference point, marginal effects for continuous variables in probit and logit models simplify dramatically, becoming a function of only the estimated constant term. We present similar simplifications for computation of the asymptotic variance of marginal effects, as well as for the effects of dummy variables on predicted probabilities. We provide a simple table, which in combination with raw probit or logit estimates, is all one needs to compute the desired effects.
Tipo: Working or Discussion Paper
Palavras-chave: Logit; Probit; Discrete choice; Binary choice; Marginal effect; Data normalization; Research Methods/ Statistical Methods; C25; C51; C81.
Ano: 2003
URL: http://purl.umn.edu/10631

Boolean logit and probit in Stata
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Braumoeller,   Bear F.
This paper introduces new statistical models, Boolean logit and probit, that allow researchers to model binary outcomes as the results of Boolean interactions among independent causal processes. Each process (or “causal path”) is modeled as the unobserved outcome in a standard logit or probit equation, and the dependent variable is modeled as the observed product of their Boolean interaction. Up to five causal paths can be modeled, in any combination—A and B and C produce Y, A and (B or [C and D]) produce Y, etc.
Tipo: Journal Article
Palavras-chave: Mlboolean; Dichotomous dependent variable; Boolean; Logit; Probit; Multiple causal paths; Complexity; Random utility; Research Methods/ Statistical Methods.
Ano: 2004
URL: http://purl.umn.edu/116271

Food Processors’ Use of Contracts to Purchase Agricultural Inputs: Evidence from a Pennsylvania Survey
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Jaenicke,   Edward C.; Shields,   Martin; Kelsey,   Timothy W.
Using data from a survey of Pennsylvania food processors, we investigate what firm-level characteristics make a processor more or less likely to buy agricultural inputs and ingredients though contracts. We find that over 20 percent of Pennsylvania processors use contracts, and over 44 percent of agricultural inputs (based on value) are purchased under contract. We also analyze the two related questions of what firm attributes, attitudes, or other factors make a firm more likely to use contracts at all, and what factors lead a processor who does contract to use them more intensively.
Tipo: Journal Article
Palavras-chave: Contracting; Food processors; Logit; Sample selection; Agribusiness; Agricultural Finance.
Ano: 2007
URL: http://purl.umn.edu/44698

Odds ratios and logistic regression: further examples of their use and interpretation
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Hailpern,   Susan M.; Visintainer,   Paul F.
Logistic regression is perhaps the most widely used method for adjustment of confounding in epidemiologic studies. Its popularity is understandable. The method can simultaneously adjust for confounders measured on different scales; it provides estimates that are clinically interpretable; and its estimates are valid in a variety of study designs with few underlying assumptions. To those of us in practice settings, several aspects of applying and interpreting the model, however, can be confusing and counterintuitive. We attempt to clarify some of these points through several examples. We apply the method to a study of risk factors associated with periventricular leucomalacia and intraventricular hemorrhage in neonates. We relate the logit model to...
Tipo: Journal Article
Palavras-chave: Cc; Cci; Cs; Csi; Logistic; Logit; Relative risk; Case–control study; Odds ratio; Cohort study; Research Methods/ Statistical Methods.
Ano: 2003
URL: http://purl.umn.edu/116084

Determinants of Decision to Pay a Price Premium for Modified Food by Consumers of the Republic of Korea
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Kaya,   Ozgur; Florkowski,   Wojciech J.; Suh,   Dong-Kyun.
The knowledge of the overall willingness-to-pay and the specific price premiums consumers accept when buying foods with less fat, saturated fat, sodium, sugar and more fiber shapes food manufacturer and distributor marketing strategies and supports the development of public health strategies. This study applies survey data collected in Korea to identify consumer profiles associated with the expressed willingness to pay a premium for foods with nutritionally desired attributes and, next, estimates the influence of consumer and household characteristics on the WTP a particular premium level for such foods. Results indicate the importance of socio-economic variables such as location, income and education, variables representing the risk of health problems...
Tipo: Conference Paper or Presentation
Palavras-chave: Willingness to pay; Price premium; Modified food; Republic of Korea; Survey data; Logit; Generalized ordered logit; Agricultural and Food Policy; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; Q1; C3; D1.
Ano: 2010
URL: http://purl.umn.edu/61004

Linking Farmers to Markets: The Case of Grain Marketing Information in Western Kenya
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Odendo,   Martins; De Groote,   Hugo.
Market liberalization created a situation where there are no guaranteed grain prices, no central information source and the need for marketing information increased. Unfortunately, most farmers have little or no access to marketing information. This study evaluates farmers’ perceptions of importance of marketing information; identifies farmers’ sources of grain marketing information; determine farmers’ confidence in and use of marketing information; and assesses determinants farmers’ willingness (WTP) to pay for marketing information. Data used in this study were generated using a structured questionnaire in a survey that covered a random sample of 120 households in traditionally grain surplus-and deficit zones of Kenya. The data were analyzed by...
Tipo: Conference Paper or Presentation
Palavras-chave: Farmer; Grains; Logit; Markets.; Agricultural and Food Policy; Consumer/Household Economics; Demand and Price Analysis; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; International Relations/Trade; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/52144

Factors Affecting Maize Producers Adoption of Forward Pricing in Price Risk Management: The Case of Vaalharts
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Jordaan,   Henry; Grove,   Bennie.
Logistic regression is employed to analyse the factors which influence the decision of whether or not the respondent used forward pricing methods during the 2004/05 maize production season.  Forward pricing methods include cash forward contracting and hedging with futures contracts and/or options, through the South African Futures Exchange (SAFEX).  Based on the results, the use of forward pricing is associated with lower levels of risk aversion and higher levels of human capital.  Factor analysis is employed to reduce the dimensionality of the personal reasons which help to interpret the underlying, common factor of the personal reasons why farmers are reluctant to use forward pricing methods.   Three factors were extracted and were labelled “Lack of...
Tipo: Journal Article
Palavras-chave: Forward pricing; Logit; Factor analysis; Agricultural Finance; Risk and Uncertainty.
Ano: 2007
URL: http://purl.umn.edu/7049

FARM COMPUTER ADOPTION IN THE GREAT PLAINS
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Hoag,   Dana L.; Ascough,   James C.; Frasier,   W. Marshall.
Computers change rapidly, yet the last survey on computer use in agriculture was in 1991.  We surveyed Great Plains producers in 1995 and used logit analysis to characterize adopters and non-adopters.  About 37% of these producers use computers which is consistent with the general population.  We confirmed previous surveys emphasizing the importance of education, age/experience, and other farm characteristics on adoption.  However, we also found that education and experience may no longer be a significant influence.  Future research and education could focus on when and where computers are most needed, and therefore when adoption is most appropriate.
Tipo: Journal Article
Palavras-chave: Adoption; Agriculture; Computers; Farmers; Great Plains; Logit; Farm Management.
Ano: 1999
URL: http://purl.umn.edu/15144

Intra-class correlation in random-effects models for binary data
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Rodriguez,   German; Elo,   Irma.
We review the concept of intra-class correlation in random-effects models for binary outcomes as estimated by Stata’s xtprobit, xtlogit, and xtclog. We consider the usual measures of correlation based on a latent variable formulation of these models and note corrections to the last two procedures. We also discuss alternative measures of association based on manifest variables or actual outcomes and introduce a new command xtrho for computing these measures for all three types of models.
Tipo: Journal Article
Palavras-chave: Intra-class correlation; Random-effects; Probit; Logit; Complementary log-log; Pearson's r; Yule's Q; Research Methods/ Statistical Methods.
Ano: 2002
URL: http://purl.umn.edu/116030

Export Market Linkage via Gentleman's Agreement: Evidence from French Bean Marketing in Kenya
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Kariuki,   Isaac Maina; Gideon,   Aiko Obare; Loy,   Jens-Peter.
"Gentleman's agreements" involving handshakes or promissory market access possibilities through brokers and middlemen have enabled most small farmers in Kenya to export an extensive array of fruits and vegetables. However, despite rapid expansion into these forms of market linkages, there has been a dearth of empirical information regarding the factors that such marketers consider when linking small farmers to the market. This paper uses data from a 2001 French bean farmers survey conducted in Mwea Tebere Central Kenya to evaluate household and infrastructural factors determining informal linkages for French bean marketing. Logit estimates show that irrigation equipment is a prerequisite for linkage, farm localities further from central crop collection...
Tipo: Conference Paper or Presentation
Palavras-chave: Verbal agreement; Logit; French beans exports; Small farmers; Linkage; Brokers and middlemen; International Relations/Trade.
Ano: 2006
URL: http://purl.umn.edu/25698

Purchasing Locally Produced Fresh Vegetables: National Franchise vs. Locally Owned and Operated Restaurants
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Rimal,   Arbindra; Benjamin,   Onyango.
The objective of this study is to examine purchasing practices of locally produced fresh vegetables among restaurants and food service institutions. The sample for the study included managers of 75 restaurants and dining centers out of a total of nearly 600 food service outlets in a mid-size metropolitan city in Midwest with a population of about 400,000. The study findings show differential preferences between national/regional chains and the local independently owned restaurants. Although managers across the board expressed willingness to buy local, actual purchasing decisions were largely driven by freshness, quality and availability. Price was not as critical a factor as others including variety and selection.  The results suggest that local vegetable...
Tipo: Conference Paper or Presentation
Palavras-chave: Local food; Restaurant managers; Logit; Agribusiness.
Ano: 2011
URL: http://purl.umn.edu/103464

An Extension of the Blinder-Oaxaca Decomposition Technique to Logit and Probit Models
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Fairlie,   Robert W.
The Blinder-Oaxaca decomposition technique is widely used to identify and quantify the separate contributions of group differences in measurable characteristics, such as education, experience, marital status, and geographical differences to racial and gender gaps in outcomes. The technique cannot be used directly, however, if the outcome is binary and the coefficients are from a logit or probit model. I describe a relatively simple method of performing a decomposition that uses estimates from a logit or probit model. Expanding on the original application of the technique in Fairlie (1999), I provide a more thorough discussion of how to apply the technique, an analysis of the sensitivity of the decomposition estimates to different parameters, and the...
Tipo: Working or Discussion Paper
Palavras-chave: Logit; Probit; Decomposition; Race; Gender; Discrimination; Research Methods/ Statistical Methods; C8; J7.
Ano: 2003
URL: http://purl.umn.edu/28425

Iowa Cooperative Fertilizer Retail Outlets: Farmers' Attitudes and Perceptions
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Gensch,   Dennis H.
Based on a sample of Iowa farmers, attributes of fertilizer retail dealers are evaluated. Honest management, making deliveries on time, relative size, willingness to negotiate price, and marketing grain are the most important attributes affecting a farmer's decision to patronize an independent or cooperative dealer. Cooperative outlets are generally in a strong competitive position. The study also shows much salient information can be generated by using such statistical methods as segmentation analysis, factor analysis, and the choice model approach.
Tipo: Report
Palavras-chave: Fertilizer; Supply cooperative; Farmers' perception; Dealer attributes; Segmentation analysis; Factor analysis; Choice model; Logit; Agribusiness.
Ano: 1983
URL: http://purl.umn.edu/52018

Determinants of Rural-Urban Migration in Konkan Region of Maharashtra
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Thorat,   V.A.; Dhekale,   J.S.; Patil,   H.K.; Tilekar,   S.N.
The study has identified the factors responsible for rural-urban migration based on 120 sample respondents each of migrants and non-migrants spread over two districts, viz. Ratnagiri and Sindhudurg of Konkan region of Maharashtra by employing the logit model. The study has highlighted the importance of rural development programs like MGNREGA that are being implemented by the government with a view to provide employment and income to the rural population in the country. It has also shown that for both migrant and non-migrant households,, agriculture was the major source of income, and their consumption expenditure was more than the production expenditure. It has also been observed that migration has a positive impact on income, expenditure and net savings...
Tipo: Article
Palavras-chave: Migration; Logit; Variable inflation factor; Odds ratio; Agricultural and Food Policy; J11; J61; C13; R23.
Ano: 2011
URL: http://purl.umn.edu/119399

A LOGIT ANALYSIS OF PARTICIPATION IN TENNESSEE'S FOREST STEWARDSHIP PROGRAM
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Bell,   Caroline D.; Roberts,   Roland K.; English,   Burton C.; Park,   William M.
This study determines the likely effect of cost-share incentives on participation in the Tennessee Forest Stewardship Program and identifies other factors that may contribute to participation.  A random utility model is used to determine the probability that a landowner will choose to participate in the program.  A binary choice model is specified to represent the dichotomous decision and a logit procedure is used to fit the model. Data are obtained from mail surveys of 4,000 randomly selected landowners.  Results indicate that attitudes and knowledge of forestry programs may be more influential in a landowner's decision to participate than monetary incentives.
Tipo: Journal Article
Palavras-chave: Cost-share incentive; Stewardship Incentive Program; Logit; Nonindustrial private forest; NIPF; Participation; Forestry; Trees; Resource /Energy Economics and Policy.
Ano: 1994
URL: http://purl.umn.edu/15185

Emerging Markets for GM Foods: A Study of  Consumer's Willingness to Pay in India
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Deodhar,   Satish Y.; Ganesh,   Sankar; Chern,   Wen S.
A random utility approach is used to estimate logit equations which indicate what factors affect the likelihood of consumption of non-GM and GM foods, and, whether or not consumers are willing to pay a premium for non-GM/GM foods.  Ceteris paribus as the price difference between non-GM and GM food rose, people were more likely to consume GM foods.  Likelihood of GM food consumption was higher in the middle income brackets.  Consumers were willing to pay an expected premium of 19.5% and 16.12% for golden rice and GM edible oil respectively.  In case of chicken, consumers seemed to pay a very negligible premium for non-GM fed chicken.  Overall, it appears that GM foods may be acceptable in the Indian market.  However, basic awareness about the GM foods may...
Tipo: Conference Paper or Presentation
Palavras-chave: GM Foods; Golden Rice; Bt cottonseed oil; GM fed chicken; Willingness to Pay; Random utility approach; Logit; India.; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Q13; D12.
Ano: 2008
URL: http://purl.umn.edu/6348

Consumer preferences and labelling: an empirical analysis of the beef sector in Italy
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Banterle,   Alessandro; Stanieri,   S.
Within the framework of European food safety measures, Reg. 1760/2000 and 1825/2000 have introduced mandatory traceability and relevant labeling into the beef sector. The paper analyses whether information on meat labels can be considered a useful instrument for consumers, facilitating the verification of quality. The purpose of the paper is, first, to evaluate if meat information is used during food purchase. Second, focusing on specific meat information, we assess the interest of consumer for some mandatory and voluntary information cues and identify the determinants affecting the use of them. Data were collected by a survey conducted in the Lombardy, region of the northern Italy, and employed a telephone questionnaire. The sample is composed by 1,025...
Tipo: Conference Paper or Presentation
Palavras-chave: Traceability; Meat; Consumer preferences; Logit; Demand and Price Analysis.
Ano: 2008
URL: http://purl.umn.edu/43547

Media Impact of Nutrition Information on Food Choice
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Shiratori,   Sakiko; Kinsey,   Jean D.
This study estimated the impact of nutrition information provided by popular media on consumers’ purchases in U.S. grocery stores, taking omega-3 fortified eggs as an example. The media index was constructed from multiple information sources by utilizing computer-coded content analysis. Their probability of purchasing omega-3 eggs between 1998 and 2007 based on household-level scanner data was analyzed by logistic regression models to incorporate elements of information effects. The results showed the significant positive impact of nutritional information from the popular media on consumers’ food choices, thus publishing in popular media can be an effective communication approach to promote consumers’ health.
Tipo: Conference Paper or Presentation
Palavras-chave: Consumer Economics; Content Analysis; Functional Food; Information economics; Logit; Omega-3 Fatty Acids; Consumer/Household Economics; Food Consumption/Nutrition/Food Safety; D12; D83.
Ano: 2011
URL: http://purl.umn.edu/103850

Live Animal Ultrasound Information as a Decision Tool in Replacement Beef Heifer Programs
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Dos Santos,   Alecsandro; Anderson,   John D.; Vann,   Rhonda C.; Willard,   Scott T.
Real-time ultrasound information taken on beef heifers prior to backgrounding is used to develop a logit model to aid heifer retention decisions. The value of ultrasound data is calculated as the difference in certainty equivalents between a decision rule incorporating ultrasound information and one using only visual cues. The value of ultrasound data is found to be around $10 per head but is influenced by heifer value and backgrounding costs.
Tipo: Journal Article
Palavras-chave: Expected utility; Heifer development; Logit; Real-time ultrasound; Agribusiness; Agricultural and Food Policy; Livestock Production/Industries; Q11; Q12; Q13.
Ano: 2008
URL: http://purl.umn.edu/45529

Factors Affecting Adoption of Recommended Management Practices in Stocker Cattle Production
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Johnson,   Rachel J.; Doye,   Damona G.; Lalman,   David L.; Peel,   Derrell S.; Raper,   Kellie Curry; Chung,   Chanjin.
Binary logit regression models were used to estimate factors affecting adoption of recommended management practices. Variables analyzed include aspects of farm structure, human capital, farm objectives, and production system employed by the producer. Results reveal that operation size and dependency upon income from the stocker operation, in particular, influence the adoption of recommended practices. Older producers and those pursuing a year-round production strategy were found to lag in adoption.
Tipo: Journal Article
Palavras-chave: Beef production; Logit; Management practices; Stocker cattle; Agribusiness; Farm Management; Industrial Organization; Labor and Human Capital; Livestock Production/Industries; Q12; Q16.
Ano: 2010
URL: http://purl.umn.edu/57153

WILLINGNESS TO PLANT IDENTITY PRESERVED CROPS: THE CASE OF MISSISSIPPI SOYBEANS
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Hudson,   Darren; Jones,   Tom.
The willingness to plant identity preserved (IP) crops was examined using Mississippi soybean producers as an example.  A contingent valuation framework was used to assess the impacts of offered premiums on a producer's probability of planting IP soybeans.  Findings suggest that offered premiums significantly affect planting decisions.  In addition, desire to learn more about IP production was found to increase the probability of planting, suggesting that desire to learn leads to experimentation.  Finally, prior knowledge or experience planting IP crops significantly decreased the probability of planting.
Tipo: Journal Article
Palavras-chave: Identity preservation; Soybeans; Contingent valuation; Experimentation; Logit; Probit; Crop Production/Industries; Q13; Q16.
Ano: 2001
URL: http://purl.umn.edu/15444

Effects of Livelihood Assets on Poverty Status of Farming Households’ in Southwestern, Nigeria
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Lawal,   Justina Oluwayemisi; Omonona,   Bolarin T.; Oyinleye,   O.D.
Poverty as a multi-dimensional phenomenon is determined by a wide range of factors one of which is the non-equity in distribution and scarcity of assets in development opportunities. The eradication of poverty in rural Nigeria remains a hard challenge for the country to overcome despite the various poverty eradication programmes implementation at different levels of government. This study examined the effects of farmers’ household livelihood assets on poverty. Primary data were collected using well structured questionnaire from 135 farming households in Egbeda Local Government Area of Oyo State, Nigeria and analyzed using descriptive statistics, Foster Greer Theobecke (FGT) weighted poverty index and Logit regression model. The result shows that poverty...
Tipo: Conference Paper or Presentation
Palavras-chave: Poverty; Farming household; Livelihood assets; Logit; Nigeria; Consumer/Household Economics; Food Security and Poverty.
Ano: 2011
URL: http://purl.umn.edu/114392

Computing interaction effects and standard errors in logit and probit models
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Norton,   Edward C.; Wang,   Hua; Ai,   Chunrong.
This paper explains why computing the marginal effect of a change in two variables is more complicated in nonlinear models than in linear models. The command inteff computes the correct marginal effect of a change in two interacted variables for a logit or probit model, as well as the correct standard errors. The inteff command graphs the interaction effect and saves the results to allow further investigation.
Tipo: Journal Article
Palavras-chave: Inteff; Interaction terms; Logit; Probit; Nonlinear models; Research Methods/ Statistical Methods.
Ano: 2004
URL: http://purl.umn.edu/116235

CRÉDITO RURAL E INADIMPLÊNCIA NA FRUTICULTURA IRRIGADA DO PÓLO PETROLINA-JUAZEIRO
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Costa,   Jose Gomes Da; Xavier,   Leonardo Ferraz; Costa,   Ecio de Farias.
O presente trabalho estuda a utilização do crédito rural na fruticultura irrigada do Pólo Petrolina-Juazeiro. A partir da análise de dados de pesquisa realizada junto a produtores do Pólo e através de estudo econométrico, são definidas as principais variáveis associadas à inadimplência e é estimada a regressão logística que explica o fenômeno no Pólo. Os resultados alcançados sugerem que a inadimplência no Pólo é influenciada positivamente por fatores como maior porte do produtor (exceto pequenos assentados de reforma agrária), realizar atividades extra-rurais e não realizar práticas agrícolas projetadas. Por outro lado, aspectos relacionados à maior idade do produtor, ser associado, ter bom relacionamento com órgãos de pesquisa e de assistência técnica,...
Tipo: Conference Paper or Presentation
Palavras-chave: Crédito rural; Logit; Inadimplência; Fruticultura; Petrolina-Juazeiro; Agricultural credit; Logit; Insolvency; Fruit production; Petrolina-Juazeiro; Agricultural Finance; Crop Production/Industries.
Ano: 2008
URL: http://purl.umn.edu/106102

Factors Affecting Demand for Branded Beef
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Martinez,   Stephen W.; Hanagriff,   Roger D.; Lau,   Michael H.; Harris,   James Michael.
This paper finds that branded fresh beef expenditures increased from 20.8 percent in 1998 to 28.6 percent in 2004 for all fresh beef expenditures.  In addition, geographic location, household income, household race, and household size were found to affect the likelihood of branded fresh beef purchases in 2004.
Tipo: Conference Paper or Presentation
Palavras-chave: Branded beef; Demographics; Demand; Panel Data; Logit; Demand and Price Analysis.
Ano: 2007
URL: http://purl.umn.edu/34885

Goodness-of-fit test for a logistic regression model fitted using survey sample data
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Archer,   Kellie J.; Lemeshow,   Stanley.
After a logistic regression model has been fitted, a global test of goodness of fit of the resulting model should be performed. A test that is commonly used to assess model fit is the Hosmer–Lemeshow test, which is available in Stata and most other statistical software programs. However, it is often of interest to fit a logistic regression model to sample survey data, such as data from the National Health Interview Survey or the National Health and Nutrition Examination Survey. Unfortunately, for such situations no goodness-of-fit testing procedures have been developed or implemented in available software. To address this problem, a Stata ado-command, svylogitgof, for estimating the F-adjusted mean residual test after svy: logit or svy: logistic estimation...
Tipo: Journal Article
Palavras-chave: Svylogitgof; Goodness of fit; Survey design; Svy; Logistic regression; Logit; Research Methods/ Statistical Methods.
Ano: 2006
URL: http://purl.umn.edu/117559

Livelihood Strategies of Resource-Poor Farmers in Striga-Infested Areas of Western Kenya.
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Manyong,   Victor M.; Alene,   Arega D.; Odhiambo,   George D.; Mignouna,   H.D.; Bokanga,   M.; Omanya,   G.; Nindi,   S.J.
Striga hermonthica (del) Benth is threatening rural livelihoods in western Kenya where maize is the major food and cash crop. Vulnerability analysis was conducted on a sample of 802 households in eight districts of Nyanza and Western provinces. Farmers perceived Striga as the major cause of poverty and food insecurity. Both household income and child nutrition indicators showed alarming conditions for the majority of households. The coping strategies and informal safety nets were not capable of addressing the vulnerability issue successfully. A logistic regression model of determinants of poverty was estimated to examine the determinants and correlates of poverty. Results revealed certain characteristics of households that were more likely to be poor: poor...
Tipo: Conference Paper or Presentation
Palavras-chave: Livelihoods; Maize; Kenya; Striga; Logit; Agricultural and Food Policy; Community/Rural/Urban Development; Consumer/Household Economics; Environmental Economics and Policy; Farm Management; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; Land Economics/Use; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/52195

Understanding the multinomial-Poisson transformation
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Guimaraes,   Paulo de Freitas.
There is a known connection between the multinomial and the Poisson likelihoods. This, in turn, means that a Poisson regression may be transformed into a logit model and vice versa. In this paper, I show the data transformations required to implement this transformation. Several examples are used as illustrations.
Tipo: Journal Article
Palavras-chave: Poisson regression; Logit; Conditional logit; Research Methods/ Statistical Methods.
Ano: 2004
URL: http://purl.umn.edu/116247

Characterization of factors determining the consumption of pork in the Metropolitan Area of the Valley of Mexico
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Delgado,Ricardo Tellez; Flores,José Saturnino Mora; Damián,Miguel Ángel Martínez; Cazares,Aleida Selene Hernández; Mata,Roberto García.
ABSTRACT The objective of the present study was to learn the characteristics that affect pork meat consumption in the Valley of Mexico Metropolitan Area. Qualitative regression models (Logit and Probit) were used, and a survey of 440 consumers was carried out. The results showed that the sample of pork consumers was made up mostly of women (91.1%) aged between 30 and 59 years and families consisting of three or four persons. The variables that condition the consumption of this type of meat are the number of members in the family, generalized chicken meat consumption, level of household income, price of the product, and illnesses that restrict its consumption. The greatest marginal effects were caused by the following variables: level of family income and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumer perception; Logit; Marginal effects; Pork meat; Probit.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100709

Factors affecting beef consumption in the valley of Mexico
Provedor de dados: Revista Brasileira de Zootecnia
Autores: Delgado,Ricardo Tellez; Flores,José Saturnino Mora.
ABSTRACTThe objective of this study was to know the factors that determine the consumption of beef in the Metropolitan Area of the Valley of Mexico, using logit and probit modeling (nominal variable) with 400 surveys. The results showed that significant variables that determine the probability of purchasing beef are schooling, number of members per family, meat preference, family income, and presence of disease in the individual. The largest marginal effects on the purchase decision were provided by the income and the meat preference variables, while the price was not significant. The main factors that determine the consumption of beef are schooling and the number of members in the family, while the meat preference and income are dismissed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Consumer; Logit; Meat; Model; Probit.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001000371

Modelagem comportamental pela técnica da preferência declarada aplicada aos agricultores de Santa Helena (PR)
Provedor de dados: Revista de Economia e Sociologia Rural
Autores: Curtarelli,Leoveraldo; Rocha Júnior,Weimar Freire da; Shikida,Pery Francisco Assis.
Este trabalho trata do comportamento dos agricultores frente às opções de investir ou não em terras, de forma a modelar como estes tomam as decisões sobre seus investimentos, utilizando-se da Técnica da Preferência Declarada. A pesquisa centrou-se nos agricultores de Santa Helena (PR), proprietários de áreas iguais ou superiores a 30 (trinta) alqueires. A coleta dos dados baseou-se em entrevistas com uma amostra de 40 agricultores. Como principais resultados, os atributos mais significativos para o modelo foram: "finalidade do investimento"; "condições de pagamentos" e "capital". O grupo pesquisado apresenta-se propenso a realizar investimentos em terras devido a: segurança financeira; possibilidade de pagamento a prazo; e opção de utilizar capital próprio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Técnica da Preferência Declarada; Terras; Logit.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032006000200005

Determinantes da demanda de crédito rural por pecuaristas de corte no estado de São Paulo
Provedor de dados: Revista de Economia e Sociologia Rural
Autores: Carrer,Marcelo José; Souza Filho,Hildo Meirelles de; Vinholis,Marcela de Mello Brandão.
Este trabalho tem o objetivo principal de identificar os determinantes da demanda e do acesso ao crédito rural por bovinocultores de corte no estado de São Paulo. Para atingir tal objetivo, foram coletados dados primários por meio de entrevistas presenciais junto a uma amostra de 86 pecuaristas. Os dados foram analisados por meio de um modelo logit. Constatou-se que todos os pecuaristas que demandaram crédito rural obtiveram acesso a pelo menos um contrato. Os resultados mostraram que pecuaristas que têm maior número de propriedades rurais, maior intensidade em tecnologia na produção, fontes de renda oriunda de atividades não rurais, são mais novos, adotam gestão de risco de preço e participam de organizações associativas relacionadas à produção rural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crédito rural; Pecuária de corte; Demanda; Logit.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032013000300003