From: Meta-analyses triggered by previous (false-)significant findings: problems and solutions
Number of small studies out of ten total studies | Sample size per study per arm for different ratios of small and large studiesa | |||||
---|---|---|---|---|---|---|
1:8 | 1:4 | 1:2 | ||||
Small studies | Large studies | Small studies | Large studies | Small studies | Large studies | |
1 | 5 | 40 | 9 | 36 | 17 | 34 |
2 | 5 | 40 | 10 | 40 | 18 | 36 |
3 | 6 | 48 | 11 | 44 | 19 | 38 |
4 | 6 | 48 | 12 | 48 | 21 | 42 |
5 | 7 | 56 | 13 | 52 | 22 | 44 |
6 | 9 | 72 | 15 | 60 | 24 | 48 |
7 | 11 | 88 | 17 | 68 | 25 | 50 |
8 | 14 | 112 | 21 | 82 | 28 | 56 |