| Full decision | Total letters(n) | Intervention studies(n (%)) | Non- intervention studies(n (%)) | Qualitative studies(n (%)) |
| Provisional then favourable | 85 | 19 (22) | 36 (42) | 30 (35) |
| Unfavourable at first review | 23 | 8 (35) | 11 (48) | 4 (17) |
| Provisional then unfavourable | 26 | 13 (50) | 9 (35) | 4 (16) |
| Provisional, final decision unknown | 7 | 3 (43) | 4 (57) | 0 (0) |
| Total letters | 141 | 43 (30) | 60 (43) | 38 (27) |