Table 6.

Risk factors of the severity of poor sleep quality derived from the zero-inflated negative binomial regression analysis.

Characteristics	B (SE)	Risk ratio (95%CI)	p-value
Age	0.004 (0.001)	1.004 (1.002,1.005)	<0.001
Gender	0.034(0.024)	1.035 (0.988,1.084)	0.145
Weight	−0.0003 (0.001)	1.000(0.998,1.002)	0.791
Illness duration (5–10 years)	0.007 (0.024)	1.007(0.960,1.056)	0.756
Disease activity	0.001 (0.023)	1.010(0.965,1.057)	0.679
Biologics	0.038 (0.022)	1.039(0.995,1.085)	0.086
PHQ-9	0.026 (0.003)	1.027(1.021,1.032)	<0.001
GAD-7	−0.0001 (0.004)	1.000(0.993,1.007)	0.980
Bowel habits	−0.001 (0.002)	0.999(0.995,1.003)	0.560
Systemic performance	−0.003 (0.004)	0.997(0.990,1.004)	0.365
Emotion performance	0.0003 (0.002)	1.000(0.997,1.004)	0.838
Social performance	−0.001 (0.003)	0.999(0.993,1.005)	0.769

PHQ-9 = Patient Health Questionnaire-9; GAD-7 = Generalized Anxiety Disorder 7-item Scale; OR = odds ratio; CI = confidence interval.