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Table 1 Composition of armed forces cohort deployed to the Gulf (GWV) and matched comparison group (NGWV) 1

From: The study of reproductive outcome and the health of offspring of UK veterans of the Gulf war: methods and description of the study population

  MEN WOMEN
  GWV NGWV1 GWV NGWV1
  n (%) n (%) n (%) n (%)
Total 51581 (100) 51688 100 1230 (100) 1236 (100)
CHARACTERISTICS AT TIME OF GULF WAR 2:
Age         
   <20 6376 (12) 6201 (12) 99 (8) 98 (8)
   20–24 18318 (36) 18269 (35) 422 (34) 419 (34)
   25–29 12322 (24) 12367 (24) 373 (30) 376 (30)
   30–39 11756 (23) 11962 (23) 239 (19) 243 (20)
   > = 40 2809 (5) 2889 (6) 97 (8) 100 (8)
   Mean (SD) 27.0 (6.84) 27.1 (7.22) 27.6 (6.86) 27.7 (7.29)
Service         
   RN 5747 (11) 5987 (12) 70 (6) 69 (6)
   Army 35979 (70) 35877 (69) 955 (78) 964 (78)
   RAF 9855 (19) 9824 (19) 205 (17) 203 (16)
Serving status         
   Regular 50780 (98) 50966 (99) 919 (75) 977 (79)
   Regular or Volunteer (TA / RNR / RRAF) reservist 801 (2) 722 (1) 311 (25) 259 (21)
Rank         
   Officer 5396 (10) 5707 (11) 443 (36) 451 (36)
   Other ranks 46185 (90) 45981 (89) 787 (64) 785 (64)
CHARACTERISTICS AT START OF MAIN STUDY (1 ST AUGUST 1998):
Age         
   <30 15676 (30) 15642 (30) 284 (23) 317 (26)
   30–39 25552 (50) 25314 (49) 704 (57) 669 (54)
   > = 40 10353 (20) 10732 (21) 242 (20) 250 (20)
   Mean (SD) 34.6 (6.85) 34.7 (7.22) 35.2 (6.85) 35.3 (7.29)
Serving status         
   Regular (service address) 24675 (48) 23585 (54) 293 (24) 313 (25)
   Discharged / reservist 3 (home address) 26906 (52) 28103 (46) 937 (76) 923 (75)
CHARACTERISTICS AT END OF STUDY (31 st MARCH 2001):
Serving status         
   Regular (service address) 20733 (40) 19584 (38) 225 (18) 253 (20)
   Discharged / reservist 3 (home address) 30848 (60) 32104 (62) 1005 (82) 983 (80)
  1. 1In active service, or on the regular or volunteer reserve list at 1st January 1991; fit to go into combat, but not deployed to the Gulf. Stratum-matched on sex, age, service and rank to the GWV. 2At 1st January 1991, or at time of first deployment if known (GWV responders). 3Personnel discharged from regular service and regular or volunteer reservists.