Bleakley (2010) finds that large-scale campaigns in the 20th century to eradicate malaria were followed by income gains for those native to historically endemic areas. I perform a pre-registered reanalysis and find these results to be largely robust. Malaria eradication efforts indeed appear to...

This paper reanalyzes Khanna (2023), which studies labor market effects of schooling in India through regression discontinuity designs. Absent from the data are four districts close to the discontinuity; restoring them cuts the reduced-form impacts on schooling and log wages by 57% and 63%....

Summan, Nandi, and Bloom (2023; SNB) finds that exposure of babies to India's Universal Immunization Programme (UIP) in the late 1980s increased their weekly wages in early adulthood by 0.138 log points and per-capita household consumption 0.028 points. But the results are attained by regressing on...

Through designs akin to difference-in-differences, Bleakley (2007) produces evidence that the cam- paign to eradicate hookworm from the American South circa 1910 boosted school enrollment in childhood and income in adulthood. This comment works to replicate and reanalyze that study. Innovations...

The wild bootstrap was originally developed for regression models with heteroskedasticity of unknown form. Over the past thirty years, it has been extended to models estimated by instrumental variables and maximum likelihood, and to ones where the error terms are (perhaps multi-way) clustered....

“The Impact of Microcredit on the Poor in Bangladesh: Revisiting the Evidence,” by David Roodman and Jonathan Morduch (2014) is the most recent of a sequence of papers and postings that seeks to refute the findings of the Pitt and Khandker (1998) article “The Impact of Group-Based Credit...

Roodman (2023) (henceforth R23) re-evaluates Khanna (2023) (henceforth K23). R23 is able to replicate K23's results, highlighting no mistakes in K23's analysis. R23 argues that K23's results may be sensitive to recreating part of the underlying district-level sample, using a subset of K23's...