Research Article

A Chinese Chan-Based Mind-Body Intervention Improves Sleep on Patients with Depression: A Randomized Controlled Trial

Table 5

Wake time after sleep onset (minutes) at pre- and post-treatment.

Pre-treatmentPost-treatmentPost minus Pre Differencet 𝑃 Effect size

Whole group
 WL ( 𝑛 = 1 0 )29.00 (36.14)28.45 (35.54) 0 . 5 5 ( 3 3 . 5 6 ) 0.050.480.02
 CBT ( 𝑛 = 1 6 )29.72 (31.53)21.75 (19.11) 7 . 9 7 ( 2 2 . 4 5 ) 1.420.090.36
 DMBI ( 𝑛 = 1 0 )33.65 (25.50)21.55 (19.92) 1 2 . 1 0 ( 2 6 . 3 4 ) 1.450.090.46+
Sub-group
 WL ( 𝑛 = 5 )49.50 (42.88)44.00 (44.64) 5 . 5 0 ( 4 8 . 6 2 ) 0.250.410.11
 CBT ( 𝑛 = 9 )51.11 (26.19)30.56 (19.44) 2 0 . 5 6 ( 2 0 . 6 8 ) 2.980.01*0.99++
 DMBI ( 𝑛 = 6 )51.67 (13.29)28.83 (22.23) 2 2 . 8 3 ( 2 8 . 5 3 ) 1.960.05*0.80++

Note. WL: waitlist control; CBT: cognitive-behavioural therapy; DMBI: Dejian mind-body intervention. Subgroup included participants who took >15 minutes to resume sleep after awakening at baseline. Standard deviations are in parentheses. * 𝑃 ≤ 0.05, +medium effect size, ++large effect size.