Improving postpartum glucose screening after gestational diabetes mellitus: a cohort study to evaluate the multicentre IMPACT initiative

International audienceAimsTo evaluate a mobilization campaign, the IMPACT initiative, which included multidisciplinary meetings, provision of information and a systematic prescription of an oral glucose tolerance test to improve the rate of glucose screening in women with gestational diabetes mellitus in the four largest maternity units in our area, starting in March 2011. MethodsWe retrospectively compared the level of self-reported screening during the first 6months postpartum of women who gave birth after having been diagnosed with gestational diabetes before (January 2009 to December 2010) and after the IMPACT campaign (April 2011 to February 2012). ResultsWe included 961 women (589 in the period before and 372 in the period after the campaign was initiated) with a mean sd age of 33.25.3years and BMI of 27.85.3kg/m(2). Multivariate analysis, stratified using a propensity score in order to limit bias caused by imbalance between both periods, showed that the postpartum screening rate was higher after the campaign began (48.9 vs 33.3%, odds ratio 1.7, 95% CI 1.1-2.5; P=0.019) and higher in women who received insulin treatment during pregnancy (odds ratio 2.3, 95% CI 1.5-3.6; P