Reported co-morbid medical conditions. Only those with incidence greater than 1% presented. Only 95 (19.8%) subjects had no coexisting systemic medical disorder (n = 480)
| Number | Percentage | |
|---|---|---|
| Hypertension | 220 | 46 |
| Diabetes mellitus | 98 | 20 |
| Angina | 78 | 16 |
| Asthma | 54 | 11 |
| Cerebrovascular event | 49 | 10 |
| Congestive heart failure | 39 | 8 |
| Myocardial infarct | 35 | 7 |
| Cardiac arrhythmia | 34 | 7 |
| Obstructive airways disease | 24 | 5 |
| Dysthyroid disease | 25 | 5 |
| Oesophageal reflux | 18 | 4 |
| Gout | 14 | 3 |
| Peripheral vascular disease | 14 | 3 |
| Current smokers | 56 | 12 |