Table 2.

Data quality table of included studies.

Item	Indicator of quality	Mean	(SD)
12	Data analyses in accordance to treatment	2	0.29
2	Description of study design	1.91	0.49
1	Hypothesis	1.91	0.39
19	Description of main findings	1.91	0.51
15	Estimates of Variance	1.91	0.38
10	Description of trial components	1.86	0.48
3	Description of outcome measures	1.82	0.44
14	Description of methods for analysis	1.77	0.46
13	Reliable and valid measures	1.64	0.58
5	Recruitment selection	1.60	0.65
6	Description of sample characteristics	1.60	0.58
9	Randomisation of participants	1.39	0.59
8	Sample size	1.37	0.86
20	Conclusion	1.37	0.46
4	Timing between study components	1	0.91
18	Adjusting for follow up time	0.9	0.89
7	Adjusting for participants lost	0.67	0.75
11	Randomisation of participants	0.67	0.75
17	Randomisation concealed	0.29	0.70
16	Control over confounding variables	0.27	0.44