Table 5.

Mean difference and 95% Bland and Altman limits of agreement in ultrasound EFW and ABW.

Equation/Author	Mean Difference	95% Limits of agreement
Campbell	−53.67	−798.7 to 691.3
Wars of	−152.83	−942.2 to 636.6
Shepard	254.31	−609.0 to 1117.6
Vintzileos	200.18	−722.0 to 1122.4
Woo	−34.52	−801.8 to 732.7
Hsieh	−9.04	−821.3 to 803.2
Ott	−127.61	−881.4 to 626.2
Combs	−196.94	−939.5 to 545.6
Jordaan	−68.75	−1065.1 to 9276
Hadlock	−38.69	−788.3 to 710.9
Nzeh 1	195.45	−739.6 to 1130.6
Nzeh 2	158.67	−776.0 to 1113.3