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Table 3 Secondary criteria: sleep efficiency computed from the sleep diary

From: A dietary supplement to improve the quality of sleep: a randomized placebo controlled trial

 

Active group (n = 51)

Placebo group (n = 50)

 

Mean (SD)

Sleep efficiency (%)

  

Week 1

80.9 (13.8)

81.5 (16.6)

Week 4

82.8 (12.7)

85.1 (13.2)

Number of napping episodes

  

Week 1

0.13

0.11

Week 4

0.13

0.17

General Clinical Impression

N (%)

Worsening

1 (2%)

3 (6%)

Unchanged

18 (36%)

14 (29%)

Improved

31 (62%)

32 (65%)

  1. Mean, SD (standard deviation), and 95% confidence interval in both groups.