Table 2

Robustness Checks on OLS Estimations

	Baseline Estimation (1)	Without Sample Weights (2)	Without Winsorization (3)	Including Fixed Effects for Origin Continent (4)	Using Median Regression Format (5)	Using Boot-Strapped Standard Errors (6)	Including Expected Overage Control (7)
Panel A: Baseline Estimation without Controls
Inverse of log ethnic group size (small groups have larger values)	0.582***	0.612***	0.571***	0.481***	0.322***	0.612***	0.384***
	(0.076)	(0.082)	(0.077)	(0.070)	(0.063)	(0.086)	(0.089)
Isolation of ethnic group	0.325***	0.331***	0.329***	0.279***	0.220***	0.331***	0.334***
	(0.076)	(0.081)	(0.077)	(0.074)	(0.073)	(0.088)	(0.074)
Adjusted R-squared value	0.373	0.368	0.364	0.507	0.198	0.368	0.435
Panel B: Including Controls for Ethnic Group’s Traits
Inverse of log ethnic group size (small groups have larger values)	0.465***	0.488***	0.460***	0.453***	0.353***	0.488***	0.286***
	(0.079)	(0.085)	(0.079)	(0.079)	(0.080)	(0.092)	(0.091)
Isolation of ethnic group	0.447***	0.441***	0.450***	0.367***	0.390***	0.441***	0.486***
	(0.094)	(0.100)	(0.095)	(0.107)	(0.088)	(0.107)	(0.084)
Adjusted R-squared value	0.455	0.452	0.454	0.529	0.262	0.452	0.517

Notes: See Table 1. Columns 2–6 provide robustness checks on the baseline specification. Regressions in Columns 5 and 6 are unweighted and should be referenced against Column 2. Column 5 reports pseudo R-squared values. Column 7 adds a control for the expected overage level for an ethnicity based on 100 Monte Carlo simulations with the number of observations in the sample.