Accurate confidence intervals for risk difference in meta-analysis with rare events

Table 4 Coverage probability and average length comparison between the five intervals when p₀∼ U(0,0.01%)

	The F interval		The IS-F interval		The R interval		The IS-R interval		The Tian interval
Δ	Coverage	Length	Coverage	Length	Coverage	Length	Coverage	Length	Coverage	Length
0.1%	0.890	0.21%	0.968	0.36%	1.000	0.63%	0.984	0.34%	0.987	1.02%
0.5%	0.932	0.47%	0.970	0.71%	0.987	0.72%	0.957	0.67%	0.997	1.10%
1.0%	0.949	0.66%	0.958	0.83%	0.877	0.84%	0.944	0.76%	0.994	1.24%
5.0%	0.949	1.45%	0.946	1.45%	0.905	1.58%	0.952	1.46%	0.903	1.52%
10.0%	0.962	1.99%	0.962	2.00%	0.935	2.15%	0.960	2.00%	0.730	1.63%

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