Fig. 2
From: Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso
Number of standard deviations from the mean using Salomon or Intergrowth 21 eqs. a: Biparietal diameter. b: Abdominal circumference. c: Head circumference. d: Femur length. Intergrowth 21: International fetal and newborn growth consortium for the twenty-first century. Dashed horizontal and vertical grey lines referred to a z score of − 1.282 corresponding to the 10th centile. Solid horizontal and vertical grey lines referred to a z score of 1.282 corresponding to the 90th centile. The black oblique line is the perfect concordance line where the z-scores from Intergrowth 21st and Salomon equations are equal