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Table 2 Derived data from meta-analyses examples

From: Estimating required information size by quantifying diversity in random-effects model meta-analyses

Meta-analysis Range of weights w i (% weights) in the fixed-effect model Inconsistency
(I 2)%
Diversity
(D 2)%
(D 2 - I 2)% A priori relative risk reduction %
(RRR)
Unadjusted information size
(SS)
Heterogeneity-adjusted
information size
(HIS)
Diversity-adjusted information size
(DIS)
Afshari and others
2007 [16]
0.2-281
(0.04-80%)
0.0 0.0 0.0 10 3,317 3,317 3,317
Al-Inany and others,
2006 [17]
0.2-3.9
(1-18%)
7.2 13.9 6.7 25 3,516 3,789 4,083
Soll and others,
1997 [18]
3.6-22.2
(6.2-38.1%)
22.9 37.3 14.3 60 193 250 307
Wetterslev and Juhl,
2006 [19]
0.3-10.4
(1-42%)
13.4 40.5 27.1 20 8,421 9,726 14,164
Bury and Tudehope,
2000 [20]
1.5 - 9.6
(7-38%)
40.2 57.7 17.5 45 440 736 1,039
Li and others,
2007 [21]
0.24-565.1
(0.02-42%)
61.9 89.9 28.0 10 31,094 81,466 306,276
Meyhoff and others,
2008 [22]
1.3-15.2
(4-47%)
74.2 79.4 5.2 30 1,699 6,581 8,239