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. 2008 Jan 15;336(7640):366–371. doi: 10.1136/bmj.39430.638241.AE

Table 2.

 Baseline military and occupational characteristics by deployment status, of 50 128 millennium cohort members. Values are numbers (percentages)

Characteristic* Deployed† (n=11 952) Non-deployed† (n=38 176)
Military rank
Enlisted 8 802 (73.6) 27 556 (72.2)
Officer 3 150 (26.4) 10 620 (27.8)
Service component
Reserve/National Guard 4 543 (38.0) 17 988 (47.1)
Active duty 7 409 (62.0) 20 188 (52.9)
Branch of service
Army 5 548 (46.4) 18 438 (48.3)
Air force 4 333 (36.3) 10 608 (27.8)
Navy/Coast Guard 1 478 (12.4) 7 582 (19.9)
Marine Corps 593 (5.0) 1 548 (4.1)
Occupational category
Other occupations 5 185 (43.4) 14 341 (37.6)
Combat specialists 2 901 (24.3) 7 114 (18.6)
Healthcare specialists 864 (7.2) 5 005 (13.1)
Service supply and functional 3 002 (25.1) 11 716 (30.7)

*Taken at time of submission of baseline questionnaire among members who submitted questionnaires at baseline (July 2001-June 2003) and follow-up (July 2004-Jan 2006).

†Deployment in support of wars in Iraq and Afghanistan considered if full deployment occurred between submission dates of baseline and follow-up questionnaires. Cohort members who were deployed after follow-up survey are included with non-deployers in these analyses.