Summary. The overall 1‐year survival rate of 261 infants born at 500 g–999 g over a 7‐year period was 46%. The survival rate of the 220 inborn infants, corrected for birth defects, would have increased from 47% to 57% if delivery room deaths were excluded and to 62% if postneonatal deaths had also been ignored. Survival improved progressively with increasing 100 g weight groups. The disability rate in the 108 survivors who were at least 2 years old corrected for prematurity was 28% with little variation between the 100 g weight groups. There were no significant trends in annual perinatal mortality, 1‐year survival and disability rate in survivors over the study period for the inborn population. The male infants had significantly lower normal‐survival rate than the female infants. Small‐for‐gestational‐age infants, comprising 11% of the inborn group, had significantly better survival but a higher disability rate. Multiple births had significantly lower survival and normal‐survival rates than had singleton births. Infants whose mothers were transferred for delivery at the perinatal centre before onset of labour had a significantly better survival rate than those whose mothers had ‘booked’ and those who were transferred in labour.
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