where oi refers to the district-level fixed effects, which are quite useful in capturing unobserved heterogeneity across districts and /t refers to the year-specific dummies
19Kumar and Somanathan (2009) give the change in district boundaries across four census periods (1971, 1981, 1991 and 2001).
which control for annual differences in yield, common to all the districts (Deschênes and Greenstone, 2007).20 The Xit refers to the district and year-specific agricultural variables, whereas the Wit refers to the climatic variables (namely rainfall and tem- perature). State and year fixed effects were not estimated, given that the sample size would be too small to run a robust panel-data estimation.
where oi refers to the district-level fixed effects, which are quite useful in capturing unobserved heterogeneity across districts and /t refers to the year-specific dummies 19Kumar and Somanathan (2009) give the change in district boundaries across four census periods (1971, 1981, 1991 and 2001). which control for annual differences in yield, common to all the districts (Deschênes and Greenstone, 2007).20 The Xit refers to the district and year-specific agricultural variables, whereas the Wit refers to the climatic variables (namely rainfall and tem- perature). State and year fixed effects were not estimated, given that the sample size would be too small to run a robust panel-data estimation.
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