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Table 2 Common formulas used for sonographic fetal weight estimation

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

Group 1 (AC and FL)
 1 Hadlock et al. (1985) [1] =10 1.304 + 0.05281(AC) + 0.1938(FL)-0.004(AC)(FL)
 2 Woo et al. (1985) [2] =10 0.59 + 0.08(AC) + 0.28(FL)-0.00716(AC)(FL)
 3 Warsof et al. (1986)a [3] =e2.792 + 0.108(FL) + 0.0036(AC)2–0.0027(FL)(AC)
Group 2 (AC and BPD)
 4 Vintzileos et al. (1987) [4] =10 1.879 + 0.0084(BPD) + 0.026(AC)
 5 Warsof et al. (1977)b [5] =10 − 1.599 + 0.144(BPD) + 0.032(AC) − 0.000111(BPD)2(AC)
 6 Shepard et al. (1982)b [6] =10–1.7492 + 0.166(BPD) + 0.046(AC)-0.002546(AC)(BPD)
 7 Jordaan (1983)b [7] =10–1.1683 + 0.0377(AC) + 0.0950(BPD)-0.0015(BPD)(AC)
 8 Hadlock et al. (1984) [8] =10 1.1134 + 0.05845(AC) − 0.000604(AC)2–0.007365 (BPD)2 + 0.000595(BPD)(AC) + 0.1694(BPD)
 9 Woo et al. (1985) [2] =10 1.63 + 0.16(BPD) + 0.00111(AC)2–0.0000859 (BPD)(AC)2
 10 Hsieh at al. (1987) [9] =10 2.1315 + 0.0056541(AC)(BPD) − 0.00015515 (BPD)(AC)2 + 0.000019782(AC)3 + 0.052594(BPD)
Group 3 (AC and HC (±BPD))
 11 Hadlock et al. (1984) [8] =10 1.182 + 0.0273(HC) + 0.07057(AC) − 0.00063 (AC)2–0.0002184(HC)(AC)
 12 Jordaan (1983) [7] =10 0.9119 + 0.488(HC) + 0.0824(AC)-0.001599(HC)(AC)
 13 Jordaan (1983) [7] =10 2.3231 + 0.02904(AC) + 0.0079(HC) − 0.0058(BPD)
Group 4 (AC, FL and BPD)
 14 Hadlock et al. (1985) [1] =10 1.335–0.0034(AC)(FL) + 0.0316(BPD) + 0.0457(AC) + 0.1623(FL)
 15 Woo et al. (1985) [2] =10 1.54 + 0.15(BPD) + 0.00111(AC)2–0.0000764(BPD)(AC)2 + 0.05(FL) − 0.000992(FL)(AC)
 16 Shinozuka et al. (1987) [10] = 0.23966(AC)2(FL) + 1.6230(BPD)3
 17 Hsieh at al. (1987) [9] =10 2.7193 + 0.0094962(AC)(BPD) − 0.1432(FL) − 0.00076742(AC)(BPD)2 + 0.001745(FL)(BPD)2
Group 5 (AC, FL and HC)
 18 Hadlock et al. (1985) [1] =10 1.326–0.00326(AC)(FL) + 0.0107(HC) + 0.0438(AC) + 0.158(FL)
 19 Combs et al. (1993) [11] =0.23718(AC)2 (FL) + 0.03312(HC)3
 20 Ott et al. (1986)b [12] =10 − 2.0661 + 0.04355(HC) + 0.05394(AC) − 0.0008582(HC)(AC) + 1.2594(FL/AC)
Group 6 (AC, FL, BPD and HC)
 21 Hadlock et al. (1985) [1] =10 1.3596 + 0.0064(HC) + 0.0424(AC) + 0.174(FL) + 0.00061(BPD)(AC) − 0.00386(AC)(FL)
  1. AC Abdominal circumference, BPD Biparietal diameter, FL Femur diaphysis length and HC Head circumference expressed in cm and estimated fetal weight (EFW) expressed in grams, unless stated otherwise. aFL expressed in mm. bEFW expressed in kg