| Co-morbidity | Number of patients |
|---|---|
| with diabetes only | 10 |
| with hypertension only | 20 |
| with other cardiovascular problems only | 30 |
| with respiratory problems only | 40 |
| with diabetes and at least one other co-morbidity | 50 |
| with hypertension and at least one other co-morbidity | 60 |
| with other cardiovascular problems and at least one other co-morbidity | 70 |
| with respiratory problems and at least one other co-morbidity | 80 |