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Table 3 Frequencies (%) of reported barriers

From: Challenges in recruiting and retaining adolescents with abuse-related posttraumatic stress disorder: lessons learned from a randomized controlled trial

Barriers to participationaRespondentsp value
All (N = 51b)Adolescents aged 14–17 (n = 25)Young adults aged 18–21 (n = 26)
Commuting time to study site24 (47.1)14 (56.0)10 (38.5)0.21c
Volume of questionnaires18 (35.3)10 (40.0)8 (30.8)0.49c
Distress caused by having to talk about painful topics18 (35.3)8 (32.0)10 (38.5)0.63c
Duration of study appointments18 (35.3)11 (44.0)7 (26.9)0.20c
Alternating interviewers11 (21.6)4 (16.0)7 (26.9)0.34c
Distress caused by fears about the results of diagnostics9 (17.6)2 (8.0)7 (26.9)0.14d
Video recordings9 (17.6)4 (16.0)5 (19.2)1.00d
Difficulties in scheduling appointmentse3 (5.9)1 (4.0)2 (7.7)1.00d
Othere3 (5.9)0 (0)3 (11.5)0.24d
Distress caused by using public transport to the study sitee2 (3.9)1 (4.0)1 (3.8)1.00d
Reachability of study site1 (2.0)0 (0)1 (3.8)1.00d
Concerns about confidentiality0 (0)0 (0)0 (0)Na
  1. Na not applicable
  2. aAssessed with the checklist for barriers to study participation (see Additional file 1). bOverall number of respondents was n = 53, but data from n = 2 respondents had to be excluded because of missing information. cCalculated from 2-sided Pearson χ2 test. dCalculated from 2-sided Fisher’s exact test. eCategory added post hoc according to free responses