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. 2022 Jan 20;53(1):109–113. [Article in Chinese] doi: 10.12182/20220160204

表 3. Comparison of differences in sleep duration between 2015 and 2018.

2015年与2018年睡眠状况差异分析

Sleep duration (2015)	Depressive group (2018)					Non-depressive group (2018)
Sleep duration (2015)	Normal/case (%)	Short/case (%)	Long/case (%)	P (χ²)		Normal/case (%)	Short/case (%)	Long/case (%)	P (χ²)
Normal	744 (66.1)	170 (46.8)	241 (47.3)	<0.001 (21.980)		255 (62.6)	122 (42.8)	88 (42.3)	0.452 (1.591)
Short	145 (12.9)	165 (45.5)	33 (6.5)			64 (15.7)	131 (46.0)	17 (8.2)
Long	236 (21.0)	28 (7.7)	235 (46.2)			88 (21.6)	32 (11.2)	103 (49.5)