Intervention (n = 52)

Control (n = 49)

Cohen’s d

(95% CI)

t-test

p value

Baseline

Follow-up

Baseline

Follow-up

PSQI

7.11

(2.66)

5.82

(2.81)

6.89

(3.44)

7.14

(2.66)

0.59

(0.51 to 2.56)

t = 2.96

p = 0.004

K6

13.57

(4.88)

11.50

(4.85)

12.81

(6.23)

13.57

(7.07)

0.61

(0.21 to 1.01)

t = 3.06

p = 0.003