Table 1.

Main features of the study population

	Total	Donors	Recipients	p
No. (%)	5751	2312 (42.2%)a	3439 (59.8%)	–
Male gender (%)	3435 (59.7)	1234 (53.4)	2201 (64)	< 0.001
Median age (IQR, years)	57 (45–66)	59 (45–71)	56 (45–65)	< 0.001
Country of birth (%)
Spain	4595 (79.9)	1383 (59.8)	3212 (93.4)	< 0.001
Other EU countries	114 (2)	34 (1.5)	80 (2.3)	–
Africa	101 (1.8)	14 (0.6)	87 (2.5)	< 0.05
Latin America	65 (1.1)	25 (1.1)	40 (1.2)	–
Asia	9 (0.2)	4 (0.2)	5 (0.1)	–
Unknown	867 (15.1)	851 (36.8)	15 (0.4)	–

^a17 (0.3%) donors were living kidney donors