![]() Oral iron in pregnancy showed a reduction in the incidence of anaemia (risk ratio 0.38, 95% confidence interval 0.26 to 0.55, one trial, 125 women) and better haematological indices than placebo (two trials). ![]() They covered a very wide range of differing drugs, doses and routes of administration, making it difficult to pool data. Many of the trials were from low‐income countries they were generally small and frequently methodologically poor. Three further studies identified are awaiting classification. ![]() We identified 23 trials, involving 3.198 women. Randomised controlled trials comparing treatments for anaemia in pregnancy attributed to iron deficiency. ![]() We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (7 June 2011), CENTRAL (2011, Issue 5), PubMed (1966 to June 2011), the International Clinical Trials Registry Platform (ICTRP) (), Health Technology Assessment Program (HTA) () and LATINREC (Colombia) (). To assess the effects of different treatments for anaemia in pregnancy attributed to iron deficiency (defined as haemoglobin less than 11 g/dL or other equivalent parameters) on maternal and neonatal morbidity and mortality. Severe anaemia can have very serious consequences for mothers and babies, but there is controversy about whether treating mild or moderate anaemia provides more benefit than harm. Iron deficiency, the most common cause of anaemia in pregnancy worldwide, can be mild, moderate or severe.
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