. 2018 Oct 22;181(1):147–154. doi: 10.1111/bjd.17101

Table 2.

Medically related absenteeism and disability days comparing HS and control cohorts

	Observed incidence rate		Unadjusted IRR		Adjusted IRR^a
	HS patients	Control patients	IRR (95% CI)	P‐value	IRR (95% CI)	P‐value
	N = 1204	N = 6020	IRR (95% CI)	P‐value	IRR (95% CI)	P‐value
Total days of lost work	18·37	7·72	2·38 (2·09, 2·71)	<0·001^*	2·29 (2·03, 2·59)	<0·001^*
Medically‐related absenteeism days	7·75	4·14	1·87 (1·76, 2·00)	<0·001^*	1·83 (1·71, 1·95)	<0·001^*
Disability days	10·62	3·58	2·97 (2·36, 3·73)	<0·001^*	2·79 (2·23, 3·49)	<0·001^*

CI, confidence interval; HS, hidradenitis suppurativa; IRR, incidence rate ratio; N, number. *P < 0·05. ^aModified CCI and health insurance plan were adjusted for in the models.