Table 4.

Analysis of the variance results of different residential floors on residents' sleep status.

	Number of residential floors					F	p
	(mean ± standard deviation)
	1–3 (n = 75)	4–6 (n = 146)	7–15 (n = 80)	16–30 (n = 71)	Over 30 (n = 65)
Sleep quality	3.08 ± 0.56	3.47 ± 0.57	3.40 ± 0.59	3.20 ± 0.55	3.03 ± 0.59	10.562	0.000**
Time to fall asleep	2.15 ± 0.77	3.40 ± 0.79	3.69 ± 0.72	2.92 ± 0.69	2.26 ± 0.83	64.466	0.000**
Sleeping time	2.91 ± 0.95	3.39 ± 0.88	3.55 ± 0.94	2.97 ± 0.84	2.85 ± 0.80	10.604	0.000**
Sleep efficiency	3.05 ± 0.82	3.55 ± 0.95	3.55 ± 0.90	3.28 ± 0.86	3.08 ± 0.87	6.612	0.000**
Sleep disorder	3.89 ± 0.75	2.84 ± 0.86	2.50 ± 0.80	3.23 ± 0.61	4.05 ± 0.74	58.559	0.000**
Drug hypnosis	3.85 ± 0.73	2.75 ± 0.73	2.46 ± 0.62	3.10 ± 0.56	3.88 ± 0.74	69.862	0.000**
Disfunction	3.73 ± 0.68	2.55 ± 0.79	2.41 ± 0.74	3.01 ± 0.64	3.62 ± 0.76	56.051	0.000**

^*p < 0.05,

^**p < 0.01.

^**When the confidence value (double test) is 0.01, the correlation is significant.