Table 4.

Summary of results for 18 positive treatment comparisons (14 trials)

	Median	IQR	Mean	Range
Hazard (or odds) ratio Q1	0.63	0.52–0.87	0.66	0.16–1.10
Hazard (or odds) ratio Q4	0.69	0.44–0.90	0.64	0.27–0.96
Extreme quartile relative hazard ratio (Q4/Q1)	1.02	0.70–1.21	1.05	0.41–1.82
Absolute risk reduction Q1 (%)	4.73	0.83–6.06	4.50	−1.43–18.27
Absolute risk reduction Q4 (%)	9.04	3.25–19.84	12.01	0.77–34.99
Extreme quartile absolute risk reduction difference (Q4-Q1)	5.10	0.33–10.91	7.51	−3.23–28.33

Q, quartile; IQR, inter-quartile range.