Table 2.

Spearman’s rank-order partial correlation among the study variables

Variable	Partial Corr.	Semipartial Corr.	Partial Corr.^2	Semipartial Corr.^2	p Value
Age (year)	-0.025	-0.020	0.001	0.000	0.388
Sex	-0.041	-0.033	0.002	0.001	0.164
Program duration	0.035	0.028	0.001	0.001	0.232
Student category	-0.028	-0.023	0.001	0.001	0.332
Frequency of long workdays (≥10 h)	0.095	0.077	0.009	0.006	0.001
Night shift frequency	0.062	0.050	0.004	0.003	0.034
Income (RMB)	0.053	0.042	0.003	0.002	0.072
Physical exercise frequency	-0.066	-0.053	0.004	0.003	0.025
Adverse academic events	0.259	0.215	0.067	0.046	<0.001
Psychological resilience	-0.450	-0.404	0.202	0.163	<0.001