Fig 4 Unadjusted and adjusted rates of caesarean section among women who had singleton deliveries during 2008, organised by strategic health authority. Rates are adjusted for maternal characteristics and clinical risk factors. E Eng, East of England; E Mid, East Midlands; Lond, Greater London; NE, North East; NW, North West; S Cent, South Central; SE, South East; SW, South West; Y & H, Yorkshire and Humberside; W Mid, West Midlands