Violence and migration: evidence from Mexico’s drug war

Table 3 First stage results

Geographic variation:	Municipal level		State level
Data	Panel	Cross section	Panel
Outcome: homicides per 100,000 inhabitants	(1)	(2)	(3)
Federal highway kilometers 2005*	0.27267***		0.03938***
Cocaine seizures in Colombia	(0.07931)		(0.01237)
Federal highway kilometers 2005		0.24475***
		(0.04914)
Observations	14,268	2425	224
Angrist-Pischke F value	11.82	24.81	10.13
Anderson-Rubin LM ChiSquared value	17.19	24.66	10.26

Robust standard errors in parentheses. ***p < 0.01, **p < 0.05, *p < 0.1
Municipal controls include average homicides from 2003 to 2004, population density, average years of schooling, % of HHs with running water, unemployment in 2010 and 2000, income per capita in 2000, kilometers of state highways in 2005, and year fixed effects for the panel. State controls include average homicides from 2003 to 2004, population density, annual real GDP per capita and unemployment, non-federal highways in 2005 and year fixed effects
Source: Mexican Census, as accessed through IPUMS, ENOE, INEGI, Colombian Ministry of Defense