Fig. 4From: MAGnesium sulphate for fetal neuroprotection to prevent Cerebral Palsy (MAG-CP)—implementation of a national guideline in CanadaBetween-centre variability of MgSO4 usage among centres. a Variability in optimal use. b Variability in underuse. c Variability in suboptimal use. The solid line indicates 95% confidence interval while the dotted line indicates the 99% confidence intervalBack to article page