Increased risk of chronic fatigue syndrome following psoriasis: a nationwide population-based cohort study

Table 4 Incidence density rates and hazard ratios of chronic fatigue syndrome for different severities of psoriasis

	N	Event no.	Person-years	IR	Crude HR (95% CI)	Adjusted HR (95% CI)^a
Non-psoriasis group	10,464	126	55,446	2.27	1.00	1.00
Psoriasis group
Mild psoriasis	2145	40	11,494	3.48	1.53 (1.07–2.19)*	1.46 (1.02–2.09)*
Severe psoriasis	471	10	2464	4.06	1.79 (0.94–3.40)	1.59 (0.83–3.03)

IR incidence density rate per 1000 person-years, HR hazard ratio; CI confidence interval
* P < 0.05
^aAdjusted for sex, age (continuous), diabetes, depression, anxiety, sleep disorder, and renal disease

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