Prevalence of cases and controls with diagnoses for diseases or lifestyle factors in the studied risk groups prior to the date of diagnosis of cap in cases and to the equivalent index date in controls
| Risk factors | Total cohort (%) (frequency) | Controls (%) (frequency) | Cases (%) (frequency) |
| Comorbid conditions | |||
| Arthritis | 0.8 (1207/153 417) | 0.6 (662/102 278) | 1.1 (545/51 139) |
| Osteoarthritis | 7.6 (11 716/153 415) | 7.3 (7502/102 278) | 8.2 (4214/51 137) |
| Hepatitis | 2.6 (4030/153 415) | 2.1 (2140/102 278) | 3.7 (1890/51 137) |
| Cardiopathy | 9.1 (14 005/153 416) | 7.4 (7583/102 278) | 12.6 (6422/51 138) |
| Stroke | 3.6 (5463/153 417) | 2.9 (2920/102 278) | 5 (2543/51139) |
| Depression | 13.5 (20 685/153 416) | 12 (12289/102 278) | 16.4 (8396/51 138) |
| Diabetes | 13.4 (20 550/153 416) | 12.3 (12543/102 278) | 15.7 (8007/51 138) |
| Anaemia | 10.3 (15 754/153 417) | 8.7 (8906/102 278) | 13.4 (6848/51 139) |
| Chronic renal disease | 2.8 (4279/153 414) | 2.2 (2209/102 277) | 4 (2070/51 137) |
| Dysphagia | 0.8 (1205/153 415) | 0.6 (581/102 278) | 1.2 (624/51 137) |
| Multiple sclerosis | 0.1 (192/153 415) | 0.1 (101/102 278) | 0.2 (91/51 137) |
| Epilepsy | 1.4 (2115/153 415) | 1.1 (1106/102 278) | 2 (1009/51 137) |
| Parkinson | 1.3 (1938/153 415) | 1 (1061/102 278) | 1.7 (877/51 137) |
| Dementia | 3.8 (5880/153 416) | 3.1 (3159/102 278) | 5.3 (2721/51 138) |
| COPD | 6.8 (10 453/153 415) | 4.5 (4647/102 278) | 11.4 (5806/51 137) |
| Asthma | 5.8 (8944/153 417) | 4.4 (4468/102 278) | 8.8% (4476/51 139) |
| Guillain-Barré | 0 (37/153 415) | 0 (17/102 278) | 0 (20/51 137) |
| HIV | 0.4 (584/153 414) | 0.2 (166/102 277) | 0.8 (418/51 137) |
| Lifestyle factors | |||
| Alcoholism | 2.3 (3571/153 417) | 2 (2008/102 278) | 3.1 (1563/51 139) |
| Tobacco | |||
| Passive smoker | 26.8 (38 889/145 059) | 25.9 (24296/93 920) | 28.5 (14593/51 139) |
| Smoker/ex-smoker | 21.4 (31 054/145 059) | 18.1 (16976/93 920) | 27.5 (14078/51 139) |
| Poor dental hygiene | 18.4 (28 262/153 416) | 16.5 (16896/102 278) | 22.2 (11366/51 138) |
| Low weight | 1.1 (1763/153 414) | 0.8 (867/102 277) | 1.8 (896/51 137) |
| Low social status | 0.2 (285/153 414) | 0.1 (128/102 277) | 0.3 (157/51 137) |
COPD, chronic obstructive pulmonary disease.