Table 2. Risk ratio of female donor versus male donor according to age of donor^a

Recipient	Donor Age	Risk Ratio	95% CI of Risk Ratio		P
Recipient	Donor Age	Risk Ratio	Lower	Upper	P
^a The table does not give absolute rates, but indicates by how much kidneys of female donors do worse than kidneys from male donors (and vice versa).
Female	16 to 45	1.08	1.04	1.12	0.0003
	>45	0.96	0.92	1.02	0.1719
Male	16 to 45	1.16	1.12	1.19	<0.0001
	>45	1.05	1.01	1.09	0.0206