# Table 2 Prevalence of lifetime PTSD, PTSS and ongoing PTSD at the first visit to the clinic (baseline), and at follow-up

Category Baseline responders Responders at 3 month Responders at 6 month
All Responders at 3 month follow-up1 Dropouts at 3 month follow-up 1   All Responders at 6 month follow-up2 Dropouts at 6 month follow-up 2   All
n = 1402/1457 n = 714/742 n = 616/639 n = 736/742 n = 629/641 n = 107/107 n = 6413/64
n (%) n (%) n (%) P-value n (%) n (%) n (%) P-value n (%)
((95% CI)) ((95% CI)) ((95% CI))
Lifetime PTSD 101 (7.2) 36 (5.0) 60 (9.7) <0.001 21 (2.9) 17 (2.7) 4 (3.7) 0.7 15 (2.3)
((5.9–8.6)) ((1.7-4.1)) ((1.1–3.5))
PTSS 329 (23.5) 148 (20.7) 161 (26.1) <0.001 34 (4.6) 28 (4.5) 6 (5.6) 0.7 39 (6.1)
((21.2–25.7)) ((3.1-6.1)) ((4.2–8.0))
Ongoing PTSD4 60 (4.3) 21 (2.9) 38 (6.2) 0.004 15 (2.0) 12 (1.9) 3 (2.8) 0.5 12 (1.9)
((3.2–5.4)) ((1.0-3.0)) ((0.8–3.0))
1. CI, confidence interval. Dropout analysis at baseline and at 3 months derived by comparing responders with dropouts at baseline and at 6 months respectively.
2. 1Analysed with chi-square test based on data from the baseline questionnaire.
3. 2Analysed with chi-square test based on data from three-month assessment.
4. 3Including six responders who were non-responders at 3 month follow-up.
5. 4Missing variables for ongoing PTSD was < 1%.