|
Smith et al. 2000
|
All active, gulf-deployed military personnel who served during the Gulf War (August 8, 1990–July 31, 1991)
|
Non-gulf-deployed Gulf War-era veterans
|
551,841 (6)
1,478,704 (12)
|
Cohort followup, August 1991-July 1997
|
DOD hospitalization records
|
Cox proportional—hazards analysis
|
1.66(0.62–4.44); adjusted for age
|
|
Kang and Bullman 2001
|
Active, gulf-deployed military personnel who served during the Gulf War (August 8, 1990–March 1, 1991)
|
Non-gulf-deployed Gulf War-era veterans
|
621,902 (NA)
746,248 (NA)
|
Cohort followup, May 1991–December 1997
|
Database records of VA and Social Security Administration
|
Cox proportional-hazards analysis
|
0.59 (0.21–1.66); adjusted for age, race, sex, marital status, brach of service, unit component
|
