Incidence and adjusted hazard ratio for coronary heart diseases stratified by comorbidity for the fibromyalgia cohort and compared with the non-fibromyalgia cohort.

<p>PY, person-year; Rate, incidence rate (per 1,000 person-years); IRR, incidence rate ratio; HR, hazard ratio</p><p>^†Adjusted HR: multiple analysis after adjusting for age, gender, occupation, income and comorbidities</p><p>*p<0.05</p><p>**p<0.001</p><p>Incidence and adjusted hazard ratio for coronary heart diseases stratified by comorbidity for the fibromyalgia cohort and compared with the non-fibromyalgia cohort.