Baseline cardiac risk factors by study population group and sex.

*P<0.001; $P<0.01; §P≤0.05 for difference between groups (age-adjusted for all variables except age). SD: Standard deviation; BMI: body mass index; Angiogr.: angiographically. CCS class: Canadian Cardiovascular Society Functional classification of angina. Comorbidity, i.e. cancer, migraine, depression, chronic obstructive pulmonary disease, gastroduodenal ulcer or gastroduodenitis, gastro-oesophageal reflux, bone, muscle and connective tissue diseases, and kidney diseases. Cardiac comorbidity, i.e. aortic stenosis, atrial fibrillation/flutter, hypertrophic cardiomyopathy and perimyocarditis up to 6 months post-CAG/inclusion. Discrepancies between counts and percentages are due to missing data.