Research on the effects of Vietnam military service suggests that Vietnam veterans experienced significantly higher mortality than the civilian population at large. These results, however, may be biased by nonrandom selection into the military if unobserved background differences between veterans and nonveterans affect mortality directly. To generate unbiased estimates of exposure to conscription on mortality, the present study compares the observed proportion of draft-eligible male decedents born 1950–1952 to the (1) expected proportion of draft-eligible male decedents given Vietnam draft-eligibility cutoffs; and (2) observed proportion of draft-eligible decedent women. The results demonstrate no effect of draft exposure on mortality, including for cause-specific death rates. When we examine population subgroups—including splits by race, educational attainment, nativity, and marital status—we find weak evidence for an interaction between education and draft eligibility. This interaction works in the opposite direction of putative education-enhancing, mortality-reducing effects of conscription that have, in the past, led to concern about a potential exclusion restriction violation in instrumental variable (IV) regression models. We suggest that previous research, which has shown that Vietnam-era veterans experienced significantly higher mortality than nonveterans, might be biased by nonrandom selection into the military and should be further investigated.
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For the purposes of this study, we restrict our analysis of the effects of military service to male veterans simply because during the Vietnam-era, an overwhelming majority of military personnel were men (Kulka et al. 1990).
The first draft lottery held on December 1, 1969 actually assigned all men born between 1944 and 1950 order-of-induction numbers. However, for reasons explained shortly, we deal only with the 1950–1952 cohorts.
These figures are based on calculations of the Defense Manpower Data Center Administrative Records combined with cohort size data from the Social Security Administration Continuous Work History Sample, as reported by Angrist (1990).
For data years 1989–1998, underlying cause of death is coded using the International Classification of Diseases (ICD) 9th Revision. In 1999, the NCHS began implementation of the updated ICD 10th Revision. Thus, to ensure comparability across data years, we code the underlying cause of death for all years based on the 34-category classification of the ICD-9.
The 1970 draft lottery also applied to men born between 1944 and 1949, but most of these veterans had already entered the service prior to the lottery drawing. Thus, the remaining men eligible for induction under the 1970 lottery may not constitute a representative sample as Angrist (1990) indicates.
This comparison assumes that birth dates are uniformly distributed across the calendar year, and thus any differences by lottery number are due to an eligibility effect rather than variation in fertility rates. Hence, we also use an alternate “check” using the male-female comparison, which should implicitly correct for the possibility of varying fertility rates.
Angrist, J. (1990). Lifetime earnings and the Vietnam era draft lottery: Evidence from Social Security administrative records. American Economic Review, 80, 313–336.
Angrist, J. D., & Chen, S. H. (2008). Long-term consequences of Vietnam-era conscription: Schooling, experience, and earnings (NBER Working Paper No. 13411). Cambridge, MA: National Bureau of Economic Research.
Angrist, J. D., Chen, S. H., & Frandsen, B. R. (2010). Did Vietnam veterans get sicker in the 1990s? The complicated effects of military service on self-reported health. Journal of Public Economics, 94, 824–837.
Angrist, J. D., Imbens, G. W., & Rubin, D. B. (1996). Identification of causal effects using instrumental variables. Journal of the American Statistical Association, 91, 444–455.
Angrist, J. D., & Krueger, A. B. (1994). Why do World War II veterans earn more than nonveterans? Journal of Labor Economics, 12, 74–97.
Armed Forces Health Surveillance Center. (2007). “Healthy deployers”: Nature and trends of health care utilization during the year prior to deployment to OEF/OIF, active components, U.S. Armed Forces, January 2002–December 2006. Medical Surveillance Monthly Report, 14, 2–5.
Boehmer, T. K. C., Flanders, F., McGeehin, M. A., Boyle, C., & Barrett, D. H. (2004). Postservice mortality in Vietnam veterans. Archives of Internal Medicine, 164, 1908–1916.
Call, V., & Teachman, J. (1996). Life-course timing and sequencing of marriage and military service and their effects on marital stability. Journal of Marriage and the Family, 58, 219–226.
Card, D., & Lemieux, T. (2001). Going to college to avoid the draft: The unintended legacy of the Vietnam War. American Economic Review, 91, 97–102.
Cook, J. M., Riggs, D. S., Thompson, R., Coyne, J. C., & Sheikh, J. I. (2004). Posttraumatic stress disorder and current relationship functioning among World War II ex-prisoners of war. Journal of Family Psychology, 18, 36–45.
Davison, E. H., Pless, A., Gugliucci, M. R., King, L. A., King, D. W., Salgado, D. M., . . . Bachrach, P. (2006). Late-life emergence of early-life trauma: The phenomenon of late-onset stress symptomatology among aging combat veterans. Research on Aging, 28, 84–114.
Dobkin, C., & Shabani, R. (2009). The long term health effects of military service: Evidence from the National Health Interview Survey and the Vietnam-era draft lottery. Economic Inquiry, 47, 69–80.
Gamache, G., Rosenheck, R., & Tessler, R. (2001). The proportion of veterans among homeless men: A decade later. Social Psychiatry and Psychiatric Epidemiology, 36, 481–485.
Gimbel, C., & Booth, A. (1996). Who fought in Vietnam? Social Forces, 74, 1137–1157.
Hearst, N., Buehler, J. W., Newman, T. B., & Rutherford, G. W. (1991). The draft lottery and AIDS: Evidence against increased intravenous drug use by Vietnam-era veterans. American Journal of Epidemiology, 134, 522–525.
Hearst, N., Newman, T. B., & Hulley, S. B. (1986). Delayed effects of the military draft on mortality: A randomized natural experiment. The New England Journal of Medicine, 314, 620–624.
Institute of Medicine. (1994). Veterans and Agent Orange: Health effects of herbicides used in Vietnam. Washington, DC: National Academy Press.
Kulka, R. A., Schlenger, W. E., Fairbank, J. A., Hough, R. L., Jordan, B. K., Marmar, C. R., & Weiss, D. S. (1990). Trauma and the Vietnam War generation. New York: Brunner/Mazel.
Liu, X., Engel, C., Kang, H., & Cowan, D. (2005). The effect of veteran status on mortality among older Americans and its pathways. Population Research and Policy Review, 24, 573–592.
London, A., & Wilmoth, J. (2006). Military service and (dis)continuity in the life course. Research on Aging, 28, 135–159.
Lundquist, J. H. (2004). When race makes no difference: Marriage and the military. Social Forces, 83, 731–757.
Lundquist, J. H. (2008). Ethnic and gender satisfaction in the military: The effect of a meritocratic institution. American Sociological Review, 73, 477–496.
Macklin, M. L., Metzger, L. J., Litz, B. T., McNally, R. J., Lasko, N. B., Orr, S. P., & Pitman, R. K. (1998). Lower precombat intelligence is a risk factor for posttraumatic stress disorder. Journal of Consulting and Clinical Psychology, 66, 323–326.
MacLean, A., & Elder, G. H., Jr. (2007). Military service in the life course. Annual Review of Sociology, 33, 175–196.
Ruger, W., Wilson, S. E., & Waddoups, S. L. (2002). Warfare and welfare: Military service, combat, and marital dissolution. Armed Forces & Society, 29, 85–107.
Sampson, R., & Laub, J. (1996). Socioeconomic achievement in the life course of disadvantaged men: Military service as a turning point, circa 1940–1965. American Sociological Review, 61, 347–367.
Seltzer, C. C., & Jablon, S. (1974). Effects of selection on mortality. American Journal of Epidemiology, 100, 367–372.
Settersten, R. (2006). When nations call: How wartime military service matters for the life course and aging. Research on Aging, 28, 12–36.
U.S. Department of Veteran Affairs. (2008a). Fact sheet: America’s wars. Washington, DC: U.S. Department of Veteran Affairs. Retrieved from http://www.va.gov/opa/publications/factsheets/fs_americas_wars.pdf
U.S. Department of Veteran Affairs. (2008b). Annual benefits report: Fiscal year 2008. Washington, DC: U.S. Department of Veteran Affairs. Retrieved from http://www.vba.va.gov/REPORTS/abr/2008_abr.pdf
Wright, J. P., Carter, D. E., & Cullen, F. T. (2005). A life-course analysis of military service in Vietnam. Journal of Research in Crime and Delinquency, 42, 55–83.
The findings and conclusions in this paper are those of the authors and do not necessarily represent the views of the Research Data Center, the National Center for Health Statistics, or the Centers for Disease Control and Prevention.
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Conley, D., Heerwig, J. The Long-Term Effects of Military Conscription on Mortality: Estimates From the Vietnam-Era Draft Lottery. Demography 49, 841–855 (2012). https://doi.org/10.1007/s13524-012-0103-2
- Military service
- Vietnam draft