Shorter inter-pregnancy interval linked to preterm birth

The population based, retrospective study of 454,716 singleton live births between 2006 and 2011 in the state of Ohio, found that 10.7% of multiparous mothers had inter-pregnancy intervals (IPI) that were between 12 and 18 months and 2.2% had an IPI of less than 12 months.

Following an IPI of less than 12 months, 53.3% of women had delivered their babies before the 39th week of pregnancy compared with 37.5% of women with an IPI that was at least 18 months or longer.

The authors acknowledged that shorter IPIs were also associated with a range of socioeconomic related factors known to increase a woman’s risk of preterm birth including tobacco use, limited prenatal care and low education levels.

Associate Professor Steve Robson, an obstetrician based in Canberra and the vice-president of the Royal Australian and New Zealand College of Obstetricians and Gynaecologists, told MO that there was “no one bit of advice that fits everybody