Associations of Indoor Ventilation Frequency with Depression and Anxiety in Chinese Older Adults

Table 2

Prevalence of depression and anxiety according to seasonal ventilation frequency.

Seasonal ventilation frequency		Depression (, %)		value	Anxiety (, %)		value
Spring ventilation frequency	12096	3277 (27.09)	156.596	<0.001	259 (2.14)	20.618	<0.001
0 time/week	562	244 (43.42)			27 (4.80)
1–5 times/week	4786	1465 (30.61)			90 (1.88)
>5 times/week	6748	1568 (23.24)			142 (2.10)
Summer ventilation frequency	12096	3277 (27.09)	120.458	<0.001	259 (2.14)	25.525	<0.001
0 time/week	303	120 (39.60)			19 (6.27)
1–5 times/week	2597	891 (34.31)			56 (2.16)
>5 times/week	9196	2266 (24.64)			184 (2.00)
Autumn ventilation frequency	12096	3277 (27.09)	131.978	<0.001	259 (2.14)	18.886	<0.001
0 time/week	488	200 (40.98)			24 (4.92)
1–5 times/week	4652	1446 (31.08)			91 (1.96)
>5 times/week	6956	1631 (23.45)			144 (2.07)
Winter ventilation frequency	12096	3277 (27.09)	89.382	<0.001	259 (2.14)	16.862	<0.001
0 time/week	2409	812 (33.71)			77 (3.20)
1–5 times/week	4986	1373 (27.54)			87 (1.74)
>5 times/week	4701	1092 (23.23)			95 (2.02)
Overall ventilation index	12096	3277 (27.09)	182.170	<0.001	259 (2.14)	14.693	0.001
0–3 (low)	1066	444 (41.65)			40 (3.75)
4–5 (intermediate)	3946	1182 (29.95)			75 (1.90)
6–8 (high)	7084	1651 (23.31)			144 (2.03)