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Table 6 Abnormal z scores using Intergrowth 21st or Salomon equations in the third trimester

From: Fetal biometry assessment with Intergrowth 21st’s and Salomon’s equations in rural Burkina Faso

Anthropometrics Abnormal z scores n (%)
<  2.5th centile < 10th centile > 90th centile >  97.5th centile
Biparietal diameter
 Intergrowth 21 6 (7.0) 23 (26.7) 0(0) 0(0)
 Salomon 2 (2.3) 10 (11.6) 0(0) 0(0)
Abdominal circumference
 Intergrowth 21 0(0) 0 (0) 17 (19.8) 5 (5.8)
 Salomon 0(0) 0 (0) 3 (3.5) 0(0)
Head circumference
 Intergrowth 21 0(0) 0 (0) 19 (22.1) 4 (4.7)
 Salomon 0(0) 0 (0) 18 (20.9) 1 (1.2)
Femur length
 Intergrowth 21 2 (2.3) 4 (4.7) 34 (39.5) 17 (19.8)
 Salomon 3 (3.5) 6 (7.0) 5 (5.8) 1 (1.2)