| Activity | Month 0 | 6 months | 12 months | 24 months |
|---|---|---|---|---|
| n (%) | n (%) | n (%) | n (%) | |
| REM | 390 (37.3) | 562 (53.7) | 668 (63.9) | 750 (71.7) |
| LDA | 159 (15.2) | 214 (20.5) | 136 (13.0) | 123 (11.8) |
| MDA | 388 (37.1) | 215 (20.6) | 196 (18.7) | 139 (13.3) |
| SDA | 109 (10.4) | 55 (5.3) | 46 (4.4) | 34 (3.3) |
p<0.00.