Average number of sessions split by practice and year
| Study year | Practices, n | Sessions, n | Median sessions, n (range) | Mean sessions, n (SD) |
|---|---|---|---|---|
| 1 | 30 | 582 | 14 (1–65) | 19.4 (16.9) |
| 2 | 27 | 794 | 13 (1–192) | 31.0 (47.3) |
| 3 | 29 | 2304 | 44 (13–590) | 76.3 (92.1) |
| 4 | 31 | 2218 | 52 (10–426) | 73.4 (77.4) |
| 5 | 31 | 5077 | 130 (18–568) | 150.3 (127.8) |
| 6 | 3 | 86 | 26 (20–40) | 28.7 (10.3) |
SD = standard deviation.