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Observational Study
©The Author(s) 2025.
World J Psychiatry. Nov 19, 2025; 15(11): 110825
Published online Nov 19, 2025. doi: 10.5498/wjp.v15.i11.110825
Table 2 Independent variable assignment
Independent variable
Assignment method
Age60-69 = 0; 70-79 = 1; 80-90 = 2
Regular exercise habitsNone = 0; yes = 1
Type of former occupationNon-physical work = 0; physical work = 1
Cancer metastasisNone = 0; yes = 1
Comorbid chronic diseases0 = 0; 1 = 1; 2 = 2; ≥ 3 = 3
StDNone = 0; yes = 1


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