Table 2
Quality assessment of irritable bowel syndrome randomised controlled trials
| Study | Randomisation method |
Double blind | Description of withdrawals and dropouts |
|---|---|---|---|
| Alevizos et al, 198930 | Random numbers | Yes | Yes |
| Awad et al, 199514 | No method described | Yes | Yes |
| Baldiet al, 199215 | No method described | Yes | Yes |
| Barbier et al, 198931 | Drawing lots | Yes | Yes |
| Cannet al, 199447 | No method described | Yes | Yes |
| Centonze et al, 198816 | No method described | Yes | Yes |
| Chapmanet al, 199026 | No method described | No | Yes |
| Cook et al, 19907 | No method described | Yes | Yes |
| Dapoignyet al, 199548 | No method described | Yes | Yes |
| Dobrilla et al, 199017 | Consecutive outpatients | Yes | Yes |
| Efskind et al, 199640 | No method described | Yes | Yes |
| Farup et al, 199837 | No method described | Yes | Yes |
| Gade and Thorn, 198949 | No method described | Yes | Yes |
| Greenbaum et al, 198732 | No method described | Yes | Yes |
| Goldberget al, 199634 | No method described | Yes | Yes |
| Halpern et al, 199641 | No method described | Yes | Yes |
| Hovdenak, 198742 | No method described | Yes | Yes |
| Jalihal and Kurian, 19908 | No method described | Yes | Yes |
| Lavoet al, 198743 | No method described | Yes | Yes |
| Lawson et al, 198818 | No method described | Yes | Yes |
| Lechet al, 198819 | No method described | Yes | Yes |
| Liu et al, 199720 | No method described | Yes | Yes |
| Luceyet al, 19879 | No method described | Yes | Yes |
| Lunardi et al, 199144 | No method described | Yes | Yes |
| Mathiaset al, 1994a50 | No method described | Yes | Yes |
| Mathias et al, 1994b51 | No method described | Yes | Yes |
| Maxtonet al, 199635 | No method described | Yes | Yes |
| Misra et al, 198927 | Consecutive patients | No | Yes |
| Mollica and Mano, 199221 | No method described | Yes | Yes |
| Nayaket al, 199728 | No method described | Yes | Yes |
| Passaretti et al, 198922 | Consecutive outpatients | Yes | Yes |
| Prior and Whorwell, 198710 | Consecutive patients | Yes | Yes |
| Prioret al, 198845 | No method described | Yes | Yes |
| Rodriguez-Magallan et al, 199746 | No method described | Yes | Yes |
| Schafer and Ewe, 199023 | No method described | Yes | Yes |
| Shaw et al, 199124 | No method described | No | Yes |
| Schutzeet al, 199738 | No method described | Yes | Yes |
| Snook and Sheperd, 199411 | Consecutive patients | Yes | Yes |
| Steadmanet al, 199236 | No method described | Yes | Yes |
| Tanum and Malt, 199633 | No method described | Yes | Yes |
| Tomas Ridocci et al, 199213 | No method described | Yes | Yes |
| Toskes et al, 199312 | No method described | Yes | Yes |
| Van Outyrve et al, 199139 | No method described | Yes | Yes |
| Van Outryve et al, 199525 | No method described | Yes | Yes |
| Villagrasaet al, 199129 | No method described | No | No |
