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Table 1 PTSD Items Administered Using D-PTSD Scale in NVVRS

From: Reconciling disparate prevalence rates of PTSD in large samples of US male Vietnam veterans and their controls

DSM-III-R Symptoms Occurring in Last 30 Days
Criteria
Male Vietnam Theater Veterans Male Vietnam Era Controls
   N Prev (%) 95% CI N Prev (%) 95% CI
B Unpleasant memories 1183 2.7 1.7–3.8 410 1.1 0.0–2.3
  Disturbing memories 1182 3.4 2.1–4.6 406 1.8 0.0–3.5
  Felt as if event recurring 1181 3.2 1.9–4.5 406 1.0 0.0–2.3
  Flashbacks 1179 1.8 0.9–2.7 404 0.5 0.0–1.3
  Suddenly feeling anxious/fearful/panicky 1187 3.3 2.0–4.7 407 0.3 0.0–0.5
C Tried not to think about previous events 1179 3.1 1.9–4.4 408 0.7 0.0–1.5
  Avoided feelings about previous events 1185 2.8 1.6–4.0 403 0.3 0.0–1.0
  Avoided certain places or activities 1190 1.3 0.6–2.1 410 1.3 0.0–2.8
  Could not remember portions of traumatic event 1169 1.8 0.8–2.8 406 0.0 0.0–0.1
  Lost interest in activities 1188 2.8 1.6–4.0 410 1.2 0.0–2.5
  Stopped caring about activities 1190 2.0 1.0–3.0 411 1.4 0.0–2.9
  Felt cut off from people 1186 4.1 2.6–5.5 410 1.4 0.0–2.9
  Felt numb or empty inside 1191 2.3 1.2–3.4 411 1.2 0.0–2.4
  Could not feel things anymore 1189 2.5 1.4–3.6 408 0.6 0.0–1.6
D Difficulty falling asleep 1182 5.9 4.1–7.6 410 2.2 0.5–3.9
  Felt as if you might get out of control 1185 1.5 0.7–2.3 406 1.0 0.0–2.2
  Minor events bothered you/made you angry 1189 3.1 1.9–4.3 411 2.6 0.1–4.7
  Trouble concentrating 1192 2.8 1.7–3.9 412 1.2 0.1–2.3
  Felt you had to stay on guard 1190 3.4 2.1–4.7 409 2.0 0.1–3.8
  Spells or panic attacks due to previous memory 1175 0.9 0.3–1.4 407 0.0 NA
  Unexpected noises startle you 1190 3.6 2.2–5.0 412 1.1 0.0–2.3
  1. 1. Confidence Intervals that were less than 0 were truncated to 0.