Table 2.

Binary logistic regression analysis of insomnia.

	β	OR	95%CI	P-values
Male	0.224	1.251	(1.007, 1.553)	0.043*
Age	0.034	1.035	(0.951, 1.126)	0.425
Resident grade				0.017*
First-year (Reference)	/	1	/	/
Second-year	0.207	1.23	(0.945, 1.601)	0.123
Third-year	0.463	1.588	(1.157, 2.18)	0.004**
Salary per month				0.364
<1,000 yuan (Reference)	/	1	/	/
1,001–3,000 yuan	−0.101	0.904	(0.697, 1.172)	0.444
3,001–5,000 yuan	0.083	1.086	(0.796, 1.483)	0.602
>5,000 yuan	−0.228	0.796	(0.556, 1.139)	0.212
Number of night shifts per month				0.602
0 (Reference)	/	1	/	/
1–2	0.109	1.115	(0.734, 1.694)	0.61
3–5	0.201	1.223	(0.848, 1.764)	0.282
>5	0.259	1.296	(0.856, 1.962)	0.22
Workplace bullying	0.055	1.056	(1.046, 1.066)	0.000**
Resilience	−0.044	0.957	(0.946, 0.968)	0.000**

Gender, age, resident grade, salary, and number of night shifts were controlled for in the analyses of workplace bullying and resilience.

^*p < 0.05;

^**p < 0.01.

All bold values are statistically significant (p < 0.05).