Numbers of dyads (patient and substitute decision-maker) approached, randomised and completed, by study site
| Site | No of dyads approached | No of dyads randomised | No of dyads completed follow-up |
| Family practices | 136 | 36 | 26 |
| Cancer outpatient clinic | 23 | 10 | 5 |
| Heart failure clinic | 64 | 17 | 12 |
| Chronic obstructive pulmonary disease clinic | 7 | 3 | 2 |