Validity of trials included in the review
| Author | Year | Method of randomisation | Blinding of intervention | >90% Follow up | Blinding of outcomes |
|---|---|---|---|---|---|
| Rastogiet al 30 | 1996 | Phone/coded drugs | Yes | Yes | Yes |
| Shinwell et al 31 | 1996 | Phone/coded drugs | Yes | Yes | Yes |
| Sander et al 32 | 1994 | Sealed envelopes/coded drugs | Yes | Yes | Yes |
| Yeh et al 33 | 1990 | Assigned list by pharmacy | Yes | Yes | Yes |
| Tapia et al 39 | 1996 | Not described | Yes | Yes | Yes |
| Yeh et al 38 | 1994 | Not described | Yes | Yes | ? |
| Durand et al 34 | 1995 | Sealed envelopes | No | Yes | Yes |
| Brozanski et al 35 | 1995 | Sealed envelopes | Yes | Yes | Yes |
| Kari et al 36 | 1993 | Not described | Yes | Yes | ? |
| Cummings et al 37 | 1989 | Assigned list/coded drugs | Yes | Yes | Yes |