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Sensitivity of pro-poor growth measurement to survey period: Evidence from rural Ethiopia

Rami Ben Haj-Kacem

Abstract


It is proven in the literature that the period of household interview may affect significantly the poverty measurement. This paper aims to extend this result and analyzes its effect on the measurement of pro-poor growth. For that, an original method is presented, based on econometric methods and the inverse function of the poverty severity index. Using data from rural Ethiopia, we start by estimating the bias of poverty measurement due to the period of household interview effect. Then, the corrected households’ expenditure from this bias is estimated for measuring pro-poor growth. The comparison of the Growth Incidence Curve and the Datt-Ravallion decomposition with and without bias shows that pro-poor growth analysis results are significantly affected by the period of household interview. The bias generates an under-estimation of the growth effect in rural Ethiopia particularly for richer households.

Keywords


Pro-poor growth, survey period, sensitivity, corrected expenditure, rural Ethiopia.

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