Table 5 Results of quality assessment of accepted trials
Article | DS | Selection bias | Detection/Performance bias | Attrition bias | Trial outcome | ||
|---|---|---|---|---|---|---|---|
| Â | Â | Randomisation | Baseline data | Blinding/Masking | Loss-to-follow up | Run-in phase | Â |
Welbury et al., 1991 [20] | 01 | 0 | 0 | 0 | A | A | A |
Östlund et al., 1992 [21] | 02 | 0 | 0 | 0 | B | A | A |
Taifour et al., 2002 [22] | 03 | 0 | A | 0 | A | A | A |
| Â | 04 | 0 | A | 0 | A | A | A |
Mandari et al., 2003 [23] | 05 | 0 | 0 | 0 | B | A | A |
Frencken et al., 2007 [24] | 06 | 0 | A | 0 | A | A | A |
Daou et al., 2009 [25] | 07 | 0 | 0 | 0 | A | A | A |
| Â | 08 | 0 | 0 | 0 | A | A | A |
Mandari et al., 2001 [27] | 09 | 0 | 0 | 0 | B | A | A |
Yu et al., 2004 [28] | 10 | 0 | 0 | 0 | A | A | A |
| Â | 11 | 0 | 0 | 0 | A | A | A |
Svanberg, 1992 [29] | 12 | 0 | 0 | 0 | A | A | A |
| Â | 13 | 0 | 0 | 0 | A | A | 0 |
Qvist et al., 1997 [26] | 14 | 0 | 0 | 0 | B | A | A |
| Â | 15 | 0 | 0 | 0 | A | A | 0 |
| Â | 16 | 0 | 0 | 0 | A | A | 0 |
| Â | 17 | 0 | 0 | 0 | A | A | 0 |