Table 4.

Associations between sleep architecture (median) and parasomnias (n = 480)

	SW			ST			TR			EN
	Yes	No	p	Yes	No	p	Yes	No	p	Yes	No	p
Total sleep time (min)	498	502	0.79	489	503	0.48	510	502	0.48	522	500	0.05*
Total time in bed (min)	562	558	0.52	548	561	0.32	563	558	0.40	572	558	0.22
Sleep efficiency (%)	89.8	91.6	0.19	91.6	91.4	0.48	92.1	91.4	0.56	92.6	91.3	0.09
Sleep latency (min)	20	11	0.07	12	11	0.92	8	11	0.19	7	11	0.008*
REM latency (min)	137	130	0.63	145	130	0.35	135	130	0.68	145	129	0.29
Stage 1 (min)	17	19	0.78	16	19	0.42	21	19	0.37	17	19	0.59
Stage 1 (%)	3.4	3.8	0.81	3.1	3.8	0.43	3.8	3.8	0.38	3.2	3.8	0.39
Stage 2 (min)	264	259	0.58	262	260	0.93	249	260	0.93	277	258	0.05*
Stage 2 (%)	53	52.3	0.69	51.6	52.4	0.70	50.7	52.5	0.26	52.6	52.4	0.54
Stage 3/4 (min)	101	103	0.93	101	103	0.55	99.5	103	0.73	109	102	0.13
Stage 3/4 (%)	20.3	21.6	0.79	20.3	21.7	0.80	21.0	21.6	0.94	22.6	21.6	0.63
REM (min)	113	110	0.89	110	111	0.95	124	110	0.48	114	110	0.51
REM (%)	21.0	21.8	0.61	21.9	21.7	0.83	21.5	21.7	0.90	22.3	21.7	0.80
Shifts stage 2 to stage 1	2	3	0.78	4	3	0.06	2	3	0.73	4	3	0.14
Shifts stage 3 to stage 2	4	7	0.78	7	7	0.98	10	7	0.08	7	7	0.77
Shifts REM to stage 1	14	12	0.51	15.5	11.0	0.006*	14.5	11	0.05*	150.5	11.0	0.19
Shifts REM to stage 2	32	24	0.40	22.5	24	0.35	23.5	24	0.81	26.5	24.0	0.16
Shifts REM to stage 3/4	6	5	0.40	8	5	0.02*	5	5	0.66	6.5	5	0.48
Shifts REM to wake	4	6	0.19	7	6	0.39	7	6	0.01*	7	6	0.50
Total stage shifts	77	66	0.52	78.5	65	0.005*	79.5	66	0.06	72	66	0.08
Total arousals	29	27	0.24	26	27	0.39	25	27	0.24	27	27	0.48
Arousal index	3.5	3.3	0.39	3.2	3.3	0.58	3.1	3.3	0.05*	3.3	3.3	0.82

*p ≤ 0.05.