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Table 3 Comparison of twenty-one formulas for fetal weight estimation

From: Comparison of sonographic fetal weight estimation formulas in patients with preterm premature rupture of membranes

Formula # Reference Pearson coefficient (r) SE (%) RE (%) POE < 10% (%) ED (%) Identified as SGA (%) Rank
Group 1 (AC and FL)
 1 Hadlock 1 (1985) 0.928 −2.35 13.27 58.6 13.48 48.8 8
 2 Woo (1985) 0.929 −7.98 14.91 44.4 16.91 58.5 14
 3 Warsof (1986) 0.913 2.44 15.41 50.6 15.60 41.5 12
Group 2 (AC and BPD)
 4 Vintzileos (1987) 0.923 −0.76 14.08 54.3 14.10 31.7 10
 5 Warsof (1977) 0.922 −13.42 12.06 32.6 18.04 63.4 15
 6 Shepard (1982) 0.924 − 4.90 13.25 54.0 14.13 46.3 11
 7 Jordaan (1983) 0.928 14.83 17.21 36.6 22.72 12.2 19
 8 Hadlock (1984) 0.925 −4.34 13.17 56.5 13.87 46.3 9
 9 Woo (1985) 0.922 −13.66 11.99 30.1 18.18 63.4 16
 10 Hsieh (1987) 0.754 −80.15 21.50 0.7 82.98 90.2 21
Group 3 (AC and HC (±BPD))
 11 Hadlock (1984) 0.937 −4.69 12.26 56.8 13.13 46.3 3
 12 Jordaan (1983) 0.930 13.29 15.17 37.7 20.17 19.5 18
 13 Jordaan (1983) 0.927 28.11 24.00 20.2 36.96 4.9 20
Group 4 (AC, FL and BPD)
 14 Hadlock 2 (1985) 0.933 −4.90 12.39 57.7 13.32 48.8 7
 15 Woo (1985) 0.925 −10.66 12.24 41.8 16.23 51.2 13
 16 Shinozuka (1987) 0.932 0.62 13.09 60.9 13.10 34.1 2
 17 Hsieh (1987) 0.895 5.14 18.40 46.4 19.10 14.6 17
Group 5 (AC, FL and HC)
 18 Hadlock 3 (1985) 0.936 −5.17 12.16 57.3 13.21 48.8 4
 19 Combs (1993) 0.940 3.23 12.85 58.9 13.25 29.3 5
 20 Ott (1986) 0.940 0.36 12.42 62.8 12.43 71.4 1
Group 6 (AC, FL, BPD and HC)
 21 Hadlock 4 (1985) 0.935 −5.40 12.17 56.6 13.31 48.8 6
  1. SE Systemic error, RE Random error, POE Proportion of estimations, ED Euclidean distance, SGA Small for gestational age, AC Abdominal circumference, FL Femur length, BPD Biparietal diameter, HC Head circumference