Placebo N = 17 Mean ± SD | Chamomile N = 17 Mean ± SD | |||||
---|---|---|---|---|---|---|
Measure | Baseline | Week 4 | Baseline | Week 4 | Effect Size a | P-value b |
Subjective Sleep Measures | ||||||
Sleep Latency (min) | 33.9 ± 32.2 | 32.9 ± 4.3 | 50.3 ± 53.0 | 34.2 ± 6.6 | 0.47 | 0.41 |
Wake After Sleep Onset (min) | 44.6 ± 46.3 | 25.9 ± 24.4 | 49.0 ± 36.6 | 32.0 ± 27.3 | 0.06 | 0.51 |
Awakenings (#) | 1.6 ± 1.1 | 1.3 ± 0.7 | 2.2 ± 1.3 | 1.4 ± 0.6 | 0.61 | 0.46 |
Total Sleep Time (hrs) | 5.8 ± 1.0 | 6.5 ± 1.0 | 5.9 ± 1.7 | 6.1 ± 1.2 | 0.59 | 0.07 |
Sleep Qualityc | 3.0 ± 0.7 | 3.3 ± 0.5 | 2.7 ± 0.7 | 3.1 ± 0.5 | 0.23 | 0.86 |
Sleep Efficiency (%) | 76.7 ± 12.0 | 83.3 ± 7.7 | 71.9 ± 16.7 | 77.5 ± 12.9 | 0.09 | 0.21 |
ISI Scored | 13.9 ± 3.6 | 11.6 ± 4.5 | 15.1 ± 3.7 | 11.9 ± 4.7 | 0.28 | 0.60 |
PSQI Total Scored | 9.5 ± 2.1 | 7.1 ± 2.7 | 10.1 ± 2.5 | 7.5 ± 3.3 | 0.10 | 0.88 |
Daytime Functioning Measures | ||||||
FSSd | 30.9 ± 9.1 | 32.3 ± 10.0 | 32.1 ± 10.6 | 27.9 ± 9.3 | 0.55 | 0.11 |
BDId | 6.0 ± 6.0 | 4.8 ± 5.0 | 3.2 ± 1.6 | 2.4 ± 2.4 | 0.31 | 0.60 |
STAI | ||||||
Trait Subscaled | 37.5 ± 11.3 | 40.8 ± 15.5 | 36.3 ± 10.1 | 35.5 ± 11.0 | 0.57 | 0.45 |