Analyzing poverty determinants in order to study welfare in household properties point of view is an attempt to study how a special variable affects on poverty, ceteris paribus. This research aims at studying those household properties which are considered as effective and important factors in household welfare and poverty. The results can use by policymakers to promote society welfare. To this purpose, poverty determinants in Northern Khorasan province have been studied. At first absolute poverty line is estimated based on expenditure data of 162 goods extracted from data of 1396 households of sample of expenditure and income of rural households plan in 2010. The effect of variables of dependency ratio, gender and age of household guardian, educational and health expenditures and dummy variable of being rural or urban households were studied using estimated poverty line and Tobit model in order to study poverty determinants in detail. The results indicated that all explanatory variables highlighted in the model except guardian age were effective on the province poverty in 99.9% level. Virtual variable of being rural or urban household was the most effective on poverty.

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