Table 3.

Results for pain interference with sleep and side effect drowsiness.

Phase	Interference with sleep			Side effect drowsiness
	N	Mean rank	Mean	N	Mean rank	Mean
New moon day	327	5507	2.85	325	5177	2.33
Waxing	5262	5669	3.04	5330	5724	2.86
Full moon day	415	5927	3.22	420	5885	3.01
Waning	5199	5515	2.89	5264	5629	2.79
Total	11,203		2.98	11,339		2.82
Significance		.012			.007