Reference

Eligible population

Type of study or methods

Date(s) of enrollment

Subgroup (n = eligible subjects)

Contacted or Located (% of eligible)

Responded or Enrolled (Response Rate)

Comments

Maconochie et al. 2003

UK military who served in gulf 8/1990-6/1991 excluding special services identified by MOD (n = 52,811)

Comparison population – not deployed, appropriately fit, in military 1/1/1991 (n = 52,924)

Retrospective cohort study of reproductive outcomes Comparison group stratum matched on service, sex, age, serving status, rank

8/1998-3/2001

Total

GWV men

GWV women

NGV men

NGV women

105,735

51,581

1,230

51,688

1,236

44,087 (41.7%, 48.5% adjusted)

24,379 (47.3%, 53% adjusted)

705 (57.3%, 72% adjusted)

18,439 (35.7%, 42% adjusted)

564 (45.6%, 60% adjusted)

Adjusted response rate—accounts for undelivered

Assessed selection bias

Reference

Purpose

Study design

Population

Comments

(where appropriate)

Eligible

Located

Enrolled (Response Rate)

Simmons et al. 2004

Incidence of self-reported adult ill health

Retrospective cohort study, comparison of deployed and nondeployed and among those who believe theyhave GWS

Men only: n = 42,818

Reference

Eligible population

Type of study or methods

Date(s) of enrollment

Subgroup (n = eligible subjects)

Contacted or Located (% of eligible)

Responded or Enrolled (Response Rate)

Comments

Kelsall et al. 2004a

All Australian veterans served in gulf 8/2/1990-9/4/1991 Comparison group—randomly selected from Australian Defense Force personnel in

Postal questionnaire and comprehensive health assessment

Comparison group frequency matched by

8/2000-4/2002

Total

4,795

GWV

4,604 recruitable (96.0%)

1,808

3,044 (66.1% of recruitable; 63.5% of eligible)

1,456 (80.5% of

Assessed selection bias using telephone-survey-only results