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Table 3 Data collection and outcome completion rates

From: Efficacy of a digital cognitive behavioral therapy for insomnia in people with low back pain: a feasibility randomized co-twin and singleton-controlled trial

Ā 

Twins (baseline)

Twins (post-intervention)

Twins (follow-up)

Singletons (baseline)

Singletons (post-intervention)

Singletons

Lost-to-follow-up/withdrew (%, n)

0.00% (0)

18.75% (6)

28.13% (9)

0.00% (0)

21.21% (14)

21.21% (14)

PSEQ (%)

0.00%

9.38%

15,63%

0.00%

16.67%

18.18%

PSFS

0.00%

9.38%

15,63%

0.00%

16.67%

18.18%

NRS

0.00%

9.38%

15,63%

0.00%

27.27%

18.18%

RMPQ

0.00%

18.75%

28.13%

0.00%

21.21%

21.21%

IPAQ-SF

0.00%

12.50%

18.75%

15.15%

18.18%

22.73%

DASS

0.00%

12.50%

28.13%

0.00%

16.67%

21.21%

ISI

0.00%

12.50%

15.63%

0.00%

16.67%

19.70%

SCI

0.00%

12.50%

75.00%a

0.00%

16.67%

21.21%

PSQI

0.31%

18.75%

18.75%

1.59%

21.21%

21.21%

Total average

0.03%

12.85%

25.69%

0.35%

19.02%

20.20%

Ā 

Twins

Singletons

Overall average

12.86%

13.19%

  1. PSEQ, PSFS, NRS, RMPQ, ISI, and SCI were mandatory for participants to submit their questionnaire responses, while the IPAQ-SF and PSQI were not
  2. aThe SCI was only considered as a follow-up outcome partway through the study, and therefore, 15 out of 23 twins who completed the follow-up questionnaire did not have data for the SCI (total 24 missing out of 32ā€‰=ā€‰75%)