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Table 1 Characteristics of the study sample (n = 1972)

From: Multimorbidity and quality of life after blast-related injury among US military personnel: a cluster analysis of retrospective data

Characteristic n %
Age, years
 18–24 857 43.5
 25–29 536 27.2
 30+ 579 29.4
Service branch
 Army 1499 76.0
 Marine Corps 396 20.1
 Other 77 3.9
Sex
 Female 94 4.8
 Male 1878 95.2
Rank/pay grade
 E1–E3 339 17.2
 E4–E6 1194 60.5
 E7–E9 234 11.9
 Warrant officer/officer 205 10.4