|  | 1992-1993 | 1994-1995 | 2000-2001 | 2003-2004 | ||||
---|---|---|---|---|---|---|---|---|---|
 |  | Wave 1 | N = 2087 | Wave 3 | N = 1679 | Wave 6 | N = 791 | Wave 7 | N = 487 |
 | Classes of CAM/OTC | N | % | N | % | N | % | N | % |
CAM | Vitamins & minerals | 113 | 5.4 | 155 | 9.2 | 53 | 6.7 | 68 | 14.0 |
 | Herbal medicines | 50 | 2.4 | 69 | 4.1 | 23 | 2.9 | 27 | 5.5 |
 | Nutritional supplements | 34 | 1.6 | 54 | 3.2 | 26 | 3.3 | 37 | 7.6 |
 | Homeopathic medicines | 4 | 0.2 | 5 | 0.3 | 0 | 0.0 | 1 | 0.2 |
 | Probiotics | 3 | 0.1 | 4 | 0.2 | 0 | 0.0 | 0 | 0.0 |
 | Combination products | 43 | 2.1 | 49 | 2.9 | 9 | 1.1 | 25 | 5.1 |
OTC | Analgesics | 112 | 5.4 | 127 | 7.6 | 44 | 5.6 | 43 | 8.8 |
 | Laxatives | 89 | 4.3 | 76 | 4.5 | 16 | 2.0 | 25 | 5.1 |
 | Antithrombotic agents | 34 | 1.6 | 43 | 2.6 | 17 | 2.1 | 10 | 2.1 |
 | Antacids | 19 | 0.9 | 14 | 0.8 | 1 | 0.1 | 6 | 1.2 |
 | Cough & cold preps | 16 | 0.8 | 18 | 1.1 | 0 | 0.0 | 5 | 1.0 |
 | Antihistamines | 7 | 0.3 | 4 | 0.2 | 2 | 0.3 | 1 | 0.2 |
 | Dermatologicals | 3 | 0.1 | 4 | 0.2 | 1 | 0.1 | 0 | 0.0 |
 | Throat preparations | 4 | 0.2 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
 | Nasal preparations | 2 | 0.1 | 5 | 0.3 | 0 | 0.0 | 0 | 0.0 |
 | Antidiarrhoeals | 2 | 0.1 | 1 | 0.1 | 0 | 0.0 | 0 | 0.0 |
 | Other1 | 11 | 0.5 | 16 | 1.0 | 4 | 0.5 | 4 | 0.8 |
 | Unknown2 | 11 | 0.5 | 10 | 0.6 | 3 | 0.4 | 12 | 2.5 |