Table 2.
Reasons for withdrawal from the trials
Reasons for withdrawal | No. of patients in series A | No. of patients in series B |
Perceived lack of efficacy | 4 | 2 |
Perceived side effects | 1 | 1 |
Duration of trial period too long | 1 | - |
Series A: NSAIDs or paracetamol for osteoarthritis
Series B: reduction of temazepam for sleep disturbances