Table 6

Dropout rate of included trials

Dropout rate (%)
Number of papers
Percent
Cumulative Percent

Not clear
57
18.6
18.6
0
165
53.7
72.3
0.1–4.9%
27
8.8
81.1
5.0–9.9%
25
8.2
89.3
10.0–24.9%
20
6.5
95.8
>= 25%
13
4.2
100.0

Total
307
100.0


Zhang et al. Trials 2008 9:22   doi:10.1186/1745-6215-9-22