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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 participationa

Respondents

p value

All (N = 51b)

Adolescents aged 14–17 (n = 25)

Young adults aged 18–21 (n = 26)

Commuting time to study site

24 (47.1)

14 (56.0)

10 (38.5)

0.21c

Volume of questionnaires

18 (35.3)

10 (40.0)

8 (30.8)

0.49c

Distress caused by having to talk about painful topics

18 (35.3)

8 (32.0)

10 (38.5)

0.63c

Duration of study appointments

18 (35.3)

11 (44.0)

7 (26.9)

0.20c

Alternating interviewers

11 (21.6)

4 (16.0)

7 (26.9)

0.34c

Distress caused by fears about the results of diagnostics

9 (17.6)

2 (8.0)

7 (26.9)

0.14d

Video recordings

9 (17.6)

4 (16.0)

5 (19.2)

1.00d

Difficulties in scheduling appointmentse

3 (5.9)

1 (4.0)

2 (7.7)

1.00d

Othere

3 (5.9)

0 (0)

3 (11.5)

0.24d

Distress caused by using public transport to the study sitee

2 (3.9)

1 (4.0)

1 (3.8)

1.00d

Reachability of study site

1 (2.0)

0 (0)

1 (3.8)

1.00d

Concerns about confidentiality

0 (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