Table 3

Median utilities compared between groups, within each era

EPControlDifference in medians, 95% CI; p value
1991–92n=196n=214 
Median (25th–75th centiles)0.947 (0.848, 1.0)1.0 (0.926, 1.0)−0.053 (−0.071 to –0.035); <0.001
1997n=135n=169 
Median (25th–75th centiles)0.947 (0.848, 1.0)1.0 (0.926, 1.0)−0.053 (−0.072 to –0.034); <0.001
2005n=144n=187 
Median (25th–75th centiles)0.925 (0.789, 1.0)1.0 (0.945, 1.0)−0.082 (−0.097 to –0.068); <0.001

  • EP, extremely preterm.