Baseline characteristics of the study population.

Data are number (%) unless otherwise indicated. OPD: obstructive pulmonary disease.
1Drug use at index date.
2Drug use at index date, or within six months prior to index date.
3Use of systemic corticosteroids with a duration of 90 days or more.
4Use of any of the following drugs: β-adrenoreceptor blockers, calcium channel antagonists, angiotensin converting enzyme inhibitors, diuretics, angiotensin-II receptor blockers, nitrates, platelet aggregation inhibitors, and statins, within six months prior to index date.
5Use of anti-diabetics within six months prior to index date.
6Class I and III antiarrhythmic drugs and non-antiarrhythmic drugs with (possible) risk of QT prolongation (Table S1).