Incidence of sick leave and disability pension in adults with musculoskeletal pain and co-occurring long-term conditions: data from the Norwegian HUNT study and national registries

Table 3 Incidence rate and relative risk of sick leave due to musculoskeletal conditions stratified by number of long-term conditions

	Person-years	No. of cases	Unadjusted IR^a	Age-adjusted IR^a (95% CI)	Unadjusted HR	Age-adjusted HR (95% CI)
No LTCs	12,074	867	718	720 (672 to 768)	1.00	1.00 (reference)
1 LTC	15,995	1,344	840	843 (798 to 888)	1.17	1.17 (1.06 to 1.29)
≥ 2 LTCs	22,181	2,143	966	968 (927 to 1,009)	1.34	1.34 (1.22 to 1.47)

LTC Long-term condition, IR Incidence rate, HR Hazard Ratio, CI Confidence Interval
^aIncidence rate per 10,000 person-years

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