| 1992-1993 | 1994-1995 | 2000-2001 | 2003-2004 | ||||
---|---|---|---|---|---|---|---|---|
 | Wave 1 | N = 2087 | Wave 3 | N = 1679 | Wave 6 | N = 791 | Wave 7 | N = 487 |
Variable | N | % | N | % | N | % | N | % |
CAM or OTC 1 | 404 | 19.4 | 460 | 27.4 | 140 | 17.7 | 173 | 35.5 |
OTC only | 268 | 12.8 | 278 | 16.6 | 79 | 10.0 | 83 | 17.0 |
CAM only | 180 | 8.6 | 241 | 14.4 | 71 | 9.0 | 118 | 24.2 |