Table 2

RSV hospitalisation rates in children with and without CHD

	Study year						Total
	1997/98	1998/99	1999/00	2000/01	2001/02	2002/03	Total
*95% confidence interval in parentheses.
CHD patients
No. of hospitalisations
0–12 mth of age	1	1	1	1	1	3	8
12–24 mth age	1	0	1	0	0	0	2
Child-years
0–12 mth of age	74	70	71	72	64	57	407
12–24 mth of age	68	69	64	66	67	58	391
Hospitalisation rate (per 100 child-years)
0–12 mth of age	1.4	1.4	1.4	1.4	1.6	5.3	2.0 (0.9 to 3.8)*
12–24 mth of age	1.5	0	1.6	0	0	0	0.5 (0.1 to 1.8)*

Non-CHD patients
Hospitalisations
0–12 mth of age	43	139	52	153	60	171	618
12–24 mth of age	5	14	15	22	12	33	101
Child-years
0–12 mth of age	9002	8917	8788	8373	8002	7858	50939
12–24 mth of age	9343	9002	8917	8788	8373	8002	52425
Hospitalisation rate (per 100 child-years)
0–12 mth of age	0.5	1.6	0.6	1.8	0.7	2.2	1.2 (1.1 to 1.3)*
12–24 mth of age	0.1	0.2	0.2	0.3	0.1	0.4	0.2 (0.16 to 0.23)*