| Design feature | Studies, n (%) |
|---|---|
| Setting | |
| US | 6 (25%)13–18 |
| Australia | 4 (17%)27,28,35,36 |
| UK | 4 (17%)21,22,24,25 |
| Belgium | 2 (8%)19,20 |
| Germany | 1 (4%)23 |
| Iran | 1 (4%)30 |
| Italy | 1 (4%)26 |
| New Zealand | 1 (4%)34 |
| Norway | 1 (4%)29 |
| Oman | 1 (4%)32 |
| Romania | 1 (4%)31 |
| Not specified | 1 (4%)33 |
| Population | |
| PCPs | 16 (67%)13,15,17,19,20,22–29,31–33 |
| Patients | 5 (20%)16,21,30,34,36 |
| PCPs and patients | 3 (13%)14,18,35 |
| Sample size | |
| 10–20 | 3 (13%)13,15,20 |
| 21–100 | 7 (29%)14,21–35,32,35 |
| 101–500 | 7 (29%)19,25,26,28,30,31,33 |
| >500 | 7 (29%)16–27,29,34,36,36 |
| Study design | |
| Quantitative | 12 (50%)14–18,25–31 |
| Qualitative | 8 (33%)13,19–32,35,32,35 |
| Mixed-methods | 2 (8%)33,34 |
| Multi-method | 2 (8%)23,36 |
PCP = primary care physician.