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Retrospective Study
©The Author(s) 2026.
World J Psychiatry. Jan 19, 2026; 16(1): 110875
Published online Jan 19, 2026. doi: 10.5498/wjp.v16.i1.110875
Table 4 Description of independent variables
Independent variable
Type
Assignment
Monthly household income per capitalCategorical1: < 5000 yuan
0: ≥ 5000 yuan
Educational levelCategorical1: Junior high school or below
0: High school or above
Social supportCategorical1: High
2: Medium
3: Low
Sleep disorderCategorical1: Yes
0: No
hs-CRPContinuous-
Smoking historyCategorical1: Yes
0: No


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