Table 3.

The Comparison of the Sleep Score and Sleep Subgroups Score Changes in the Study Groups at the Beginning and the End of the Study

Variables	Mean ± SD Placebo (n = 21)	Mean ± SD Ellagic Acid (n = 22)	P1
PSQI (score)
Baseline	9.01 ± 2.35	9.78 ± 2.21	0.145
End	8.69 ± 2.91	6.04 ± 1.83	0.036
P2	0.109	0.002
Sleep duration (hour)
Baseline	5.29 ± 1.36	5.78 ± 1.09	0.319
End	5.98 ± 2.04	7.03 ± 2.01	0.003
P2	0.206	0.017
Sleep latency (minute)
Baseline	49.88 ± 38.99	51.09 ± 18.27	0.491
End	45.39 ± 15.17	30.09 ± 12.06	0.021
P2	0.317	0.002
Sleep efficiency (%)
Baseline	80.68 ± 19.07	81.27 ± 14.37	0.267
End	84.06 ± 14.29	89.41 ± 17.39	0.031
P2	0.108	0.017
Sleep disturbances (score)
Baseline	1.95 ± 0.31	1.99 ± 0.42	0.33
End	1.65 ± 0.8	0.98 ± 0.2	0.027
P2	0.163	0.001
Use of sleep medications (time per week)
Baseline	2.65 ± 0.84	2.36 ± 0.9	0.142
End	2.01 ± 0.19	0.94 ± 0.06	0.013
P2	0.186	0.01
Day time dysfunction (score)
Baseline	1.95 ± 0.41	1.87 ± 0.27	0.44
End	1.37 ± 0.26	0.61 ± 0.11	0.002
P2	0.19	0.001
Subjective sleep quality (score)
Baseline	1.89 ± 0.39	2.03 ± 0.69	0.32
End	1.73 ± 0.21	1.19 ± 0.43	0.039
P2	0.249	0.024

Data are expressed as means ± SD.

P1, Comparison of the mean of sleep score and sleep subgroups score between the two groups of ellagic acid and placebo (independent samples t-test); P2, Comparison of mean of baseline sleep score and sleep subgroups score changes in each group at baseline and end of study (paired samples t-test)