Table 1.

Relationship between polysomnography and comprehensive geriatric assessment.

Polysomnography variables	Difficulty sleeping			Waking up at night			Difficulty sleeping and waking up at night			Sleepiness
	Yes	No	P	Yes	No	P	Yes	No	P	Yes	No	P
	Mean±SD	Mean±SD		Mean±SD	Mean±SD		Mean±SD	Mean±SD		Mean±SD	Mean±SD
Sleep onset latency	74.0±75.6	27.8±29.3	0.015⁎	51.30±68.31	31.94±34.76	0.005⁎	29.96±23.52	31.94±34.76	0.278	30.32±38.95	32.82±37.61	0.976
Total sleep time	304.43±89.14	297.40±74.44	0.409	314.66±106.49	297.40±74.44	0.162	304.83±80.08	297.40±	0.931	287.73±205.05	311.17±63.56	0.005⁎
Sleep efficiency	71.12±21.46	69.44±17.34	0.399	69.40±25.16	69.44±17.34	0.158	67.92±18.04	69.44±17.34	0.933	59.8±24.1	76.41±10.5	0.004⁎
Stage 1	17.31±11.77	17.17±11.59	0.962	14.61±7.22	17.17±11.59	0.249	19.94±12.13	17.17±11.59	0.889	19.52±11.27	16.26±10.83	0.572
Stage 2	48.05±12.82	42.51±12.30	0.868	42.61±14.63	42.51±12.30	0.885	43.32±7.46	42.51±12.30	0.075	47.67±11.86	41.52±11.18	0.98
Stage 3	21.21±14.52	22.87±8.96	0.249	28.77±19.17	2287±8.96	0.095	20.79±12.98	22.87±8.96	0.141	17.84±11.56	25.77±12.28	0.895
REM	18.04±7.0	18.68±6.55	0.629	16.86±5.23	18.68±6.55	0.78	15.93±5.10	18.68±6.55	0.599	16.17±5.92	18.65±6.08	0.734
Awakenings	117.88±62.28	83.16±55.38	0.453	59.67±20.93	83.16±55.38	0.139	131.11±64.40	83.16±55.38	0.61	92.47±50.61	99.04±64.27	0.372
Leg movements	34.97±48.08	17.75±29.79	0.261	5.46±9.96	17.75±29.74	0.192	23.63±20.28	17.52±29.74	0.732	31.12±31.46	14.65±29.54	0.537
Apnea/hipopnea index	16.46±14.68	19.62±21.35	0.226	11.53±13.44	19.62±21.335	0.192	27.54±21.32	19.62±21.35	0.452	19.53±18.36	19.57±20.14	0.931

Data represented as mean± standard deviation. P: 0.005.