Table 2 Demographic variables and A&E attendance.

	Controls (%) (n = 394)	Cases (%) (n = 1018)	OR (95%CI)
Age (years)
<5	60 (15.2)	344 (33.8)	1.00
5–6.9	80 (20.3)	209 (20.5)	0.46 (0.31 to 0.66)
7–9.9	103 (26.1)	227 (22.3)	0.38 (0.27 to 0.55)
>10	151 (38.3)	238 (23.4)	0.27 (0.20 to 0.39)
Sex
Male	239 (60.7)	633 (62.2)	1.00
Female	155 (39.3)	385 (37.8)	0.94 (0.74 to 1.19)
Ethnic group
White	208 (52.8)	285 (28.0)	1.00
Black African	51 (12.9)	120 (11.8)	1.72 (1.18 to 2.49)
Black Caribbean	43 (10.9)	108 (10.6)	1.83 (1.23 to 2.72)
Black other	55 (14.0)	86 (8.5)	1.14 (0.78 to 1.67)
Other	35 (8.9)	119 (11.7)	2.48 (1.64 to 3.77)
Data not available	2 (0.5)	300 (29.5)