Birth Rates and the Vietnam Draft
利用各州各时期每百名19-25岁男性中被征召人数的外生变化，研究发现越南战争期间更高的征兵率显著降低了出生率。
The Vietnam conflict was the defining event for a generation, with nearly 8 million Americans serving in the armed forces. A large literature in economics has focused on effects of Vietnam-Era service post-war, while little research looks at contemporaneous effects of the mobilization, despite the potential for this mobilization to change marriage markets for particular cohorts. We use exogenous variation across states and over time in men drafted per 100 men 19-25 to look at the effects of the wartime mobilization on birth rates. We find robust evidence that higher rates of inducted men led to significantly lower birth rates.