Table 1.

Characteristics of all participants and those hospitalized with C. difficile infection, 45 and Up Study

Variables	Population (N = 266 922) n (%)	C. difficile infection (n = 187) n (%)
Age group (years)
45–54	77 874 (29·2)	22 (11·8)
55–64	85 855 (32·2)	32 (17·1)
65–74	58 060 (21·7)	49 (26·2)
75–84	36 873 (13·8)	63 (33·7)
⩾85	8260 (3·1)	21 (11·2)
Sex
Female	143 101 (53·6)	120 (64·2)
Male	123 821 (46·4)	67 (35·8)
Region of residence
Cities	120 200 (45·0)	105 (56·2)
Inner regional	93 779 (35·1)	60 (32·1)
Outer regional	52 943 (19·8)	22 (11·7)