Anaemia and perinatal outcome in Port Moresby

In 1987, a computerized obstetric database was set up at the Port Moresby G eneral Hospital. Between 1987 and 1992, 27,117 births took place. The mean haemoglobin value amongst the 83% of women in whom a haemoglobin value was tested was 10.0 +/- 1.7 g/dL. High stillbirth rates (94 per 1,000) were ass ociated with a haemoglobin value <6 g/dL. The stillbirth rate was slightly lower (14 per 1,000) in woman whose lowest haemoglobin value was in the ran ge 10.0-10.9 g/dL than in those with a haemoglobin value greater than or eq ual to 11 g/dL (18 per 1,000). The stillbirth rate was increased in women w ith haemoglobin values greater than or equal to 14.0 g/dL. With respect to low birthweight (<2,500 g), the rates were also higher when the haemoglobin value was above 14.0 g/dL. The reason for these findings is not apparent a nd may be clue to the impact of an uncharacterized confounding variable rat her than the haemoglobin value.