From: Do alternative methods for analysing count data produce similar estimates? Implications for meta-analyses
Very low mean (%)
Low mean (%)
Moderate mean (%)
High mean (%)
No overdispersion
8.15
6.99
1.37
0.04
Moderate overdispersion
3.77
5.28
0.33
0
High overdispersion
2.62
4.29
0.20