Table 3

 Risk comparison for RSV hospitalisation in children with and without CHD as assessed in 2 different studies

StudyParameter*Age group
<6 mth<12 mth12–24 mth<24 mth
*Per 100 child-years; 95% confidence intervals are given in parentheses.
†Hospitalisation rates for non-CHD patients and confidence intervals were calculated using raw data provided in the report.
‡p values for comparison of relative risks between the two study populations for the age groups <6 months, <12 months, 12–24 months, and <24 months were 0.45, 0.43, 0.70, and 0.51, respectively (test for homogeneity).
This studyHospitalisation rate
 CHD patients2.5 (0.8 to 5.6)2.0 (0.9 to 3.8)0.5 (0.1 to 1.8)1.3 (0.6 to 2.3)
 Non-CHD patients1.8 (1.6 to 2.0)1.2 (1.1 to 1.3)0.2 (0.16 to 0.23)0.7 (0.6 to 0.8)
 Relative risk1.4 (0.6 to 3.1)‡1.6 (0.8 to 3.2)‡2.7 (0.7 to 9.7)‡1.8 (1.0 to 3.3)‡
Ref. 4†Hospitalisation rate
 CHD patients12.1 (10.1 to 14.3)9.3 (8.0 to 10.7)1.8 (1.2 to 2.7)6.1 (5.3 to 7.0)
 Non-CHD patients5.5 (5.3 to 5.7)4.1 (3.9 to 4.2)0.8 (0.7 to 0.9)2.7 (2.6 to 2.8)
 Relative risk2.2 (1.8 to 2.6)‡2.3 (1.9 to 2.6)‡2.4 (1.6 to 3.7)‡2.2 (1.9 to 2.6)‡