Table 4 Assessment of systematic error/bias risk of clinical trials per topic
From: Research gaps identified during systematic reviews of clinical trials: glass-ionomer cements
SR | T | DS | Selection bias risk | Detection/Performance | Attrition bias risk | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bias risk | ||||||||||||||||||
Randomisation and | Baseline data comparison | Blinding/ | Loss-to- follow -up | |||||||||||||||
Allocation concealment | between groups | Masking | ||||||||||||||||
A | B | C | D | 0 | A | B | C | 0 | A | B | C | 0 | A | B | 0 | |||
Mickenautsch and Yengopal, 2011 [3] | [a] | 30 | 30 | 9 | 21 | 30 | 18 | 7 | 5 | |||||||||
Mickenautsch and Yengopal, 2011 [4] | [a] | 12 | 12 | 2 | 10 | 12 | 10 | 2 | ||||||||||
[b] | 5 | 5 | 1 | 4 | 5 | 3 | 2 | |||||||||||
Mickenautsch et al., 2010 [5] | [a] | 1 | 1 | 1 | 1 | 1 | ||||||||||||
[b] | 12 | 12 | 9 | 3 | 12 | 3 | 9 | |||||||||||
[c] | 6 | 6 | 6 | 6 | 6 | |||||||||||||
[d] | 6 | 1 | 5 | 1 | 5 | 6 | 6 | |||||||||||
[e] | 2 | 1 | 1 | 1 | 1 | 2 | 2 | |||||||||||
Mickenautsch and Yengopal, 2010 [6] | [b] | 12 | 12 | 12 | 12 | 12 | ||||||||||||
Yengopal and Mickenautsch, 2011 [7] | [a] | 4 | 4 | 4 | 4 | 4 | ||||||||||||
[b] | 2 | 2 | 2 | 2 | 1 | 1 | ||||||||||||
[c] | 5 | 5 | 5 | 5 | 5 | |||||||||||||
[d] | 4 | 4 | 4 | 4 | 4 | |||||||||||||
[e] | 9 | 9 | 9 | 9 | 6 | 3 | ||||||||||||
Yengopal and Mickenautsch, 2010 [8] | [1] | 19 | 19 | 19 | 19 | 19 | ||||||||||||
Mickenautsch et al., 2010 [9] | [a] | 8 | 8 | 8 | 8 | 1 | 7 | |||||||||||
[b] | 14 | 14 | 14 | 14 | 14 | |||||||||||||
Mickenautsch et al., 2010 [10] | [a] | 18 | 18 | 18 | 18 | 18 | ||||||||||||