“…Difference-in-Difference (DID) approach has been a standard method in the literature to investigate the impact of PDS on nutrient intake (Kishore and Chakrabarti, 2015, Krishnamurthy et al, 2014a, Krishnamurthy et al, 2014b). It is a useful tool to establish causal effect of an intervention when there is a baseline and follow-up information in the form of repeated cross-section (Khandker et al, 2009, Imbens and Wooldridge, 2009).…”