Volume 4, Number 2—June 1998
Synopsis
Hospitalizations for Unexplained Illnesses among U.S. Veterans of the Persian Gulf War
James D. Knoke
and Gregory C. Gray
and Gregory C. Gray
Table 4
Frequencies and risk ratios under the Cox proportional hazards model for all hospitalizations with at least one unexplained illness, selected demographic variables, 1 August 1991 to 1 April 1996
| Variable | Deployed | Nondeployed | Risk ratioa | 95% Confidence interval | |
|---|---|---|---|---|---|
| Not deployed | - | 1,479,751 | |||
| Deployed | 552,111 | - | 1.06 | 1.03 - 1.09 | |
| Not hospitalized before warb,c | 513,486 | 1,375,169 | |||
| Hospitalized before war | 38,625 | 104,582 | 1.71 | 1.65 - 1.78 | |
| Malec | 518,421 | 1,291,478 | |||
| Female | 33,690 | 188,273 | 2.11 | 2.04 - 2.18 | |
| White | 383,704 | 1,110,949 | |||
| Black | 130,249 | 286,427 | 1.04 | 1.01 - 1.08 | |
| Other race/ethnicityc | 38,158 | 82,375 | 0.91 | 0.86 - 0.96 | |
| All other occupationsc | 523,713 | 1,372,160 | |||
| Health-care worker | 28,398 | 107,591 | 1.44 | 1.38 - 1.50 | |
| Enlisted | 489,034 | 1,238,790 | |||
| Officerc | 63,077 | 240,961 | 0.66 | 0.62 - 0.70 | |
| Salary/month: | < $1,000 | 122,161 | 328,187 | ||
| $1,000-$1,399 | 269,500 | 573,995 | 0.77 | 0.74 - 0.79 | |
| > $1,400c | 160,450 | 577,569 | 0.82 | 0.78 - 0.87 | |
| Army | 258,858 | 459,644 | |||
| Other branches | 293,253 | 1,202,107 | 0.60 | 0.58 - 0.62 | |
aRisk ratios are relative to the first category for each variable.
bIn the 12 months preceding 1 August 1990.
cIncludes unknown.
Page created: December 14, 2010
Page updated: December 14, 2010
Page reviewed: December 14, 2010
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.