Authors : Sola Olorunfemi and Igbekele A. Ajibefun
Abstract: The objective of the study is to analyze food consumption pattern in Southwestern Nigeria. Data collected from 300 heads of household through a multi-stage random sampling technique were analyzed. Sample selection models that allow to take into account and correct the possible bias due to zero consumption were used. Also various single equation models were applied. Demand function was estimated by Ordinary Least Squares (OLS); Heckman two-steps sample selection estimator and the maximum likelihood estimator. Result shows that the t statistics test on the sample selection coefficient indicates absence of sample selection bias. It is found out that the mean percentage expenditure share for carbohydrate (rice, yam and gari) foodstuffs in the three states was 51.7% while 28.6% was spent on proteinous foodstuff. The expenditure elasticities results indicate that gari and rice are normal goods in the region. Result shows that rice and gari are strong substitute. Also that beans is a substitute for rice and plantain.
Sola Olorunfemi and Igbekele A. Ajibefun , 2007. Sample Selection Analysis of Household Food Consumption in Southwestern Nigeria . Pakistan Journal of Social Sciences, 4: 1-8.