Table 4

Comparison of risk adjusted mortality between 1978-87 and 1988-91

Score1978-871988-91Odds ratio95% confidence intervalP value
Infants admitted (n)Infants died (n)Mortality (%)Infants admitted (n)Infants died
(n)
Mortality (%)
⩽18275103.614442.81.310.42-4.100.67*
19-231484429.7832226.51.120.72-1.730.64*
24-28996363.6371951.41.260.90-1.810.19*
>28504488.0302376.71.150.92-1.430.23*
Overall57216128.12946823.11.190.96-1.450.12#
  • 4-150 χ2Mantel-Haenszel test to compare mortality of infants with this score in both periods.

  • 4-159 stratified Mantel-Haenszel test to compare risk adjusted mortality in both periods.