Concordance between self-reported pre-pregnancy body mass index (BMI) and BMI measured at the first prenatal study contact

Table 2 Mean difference comparisons between measured and self-reported anthropometrics for pregnant women in the PrOMIS cohort (N = 2605)

Measure	Measured			Self-reported			Mean difference (SD)
Measure	All	Skewness	Kurtosis	All	Skewness	Kurtosis	All
Weight (kg)	59.21 ± 10.05	0.87	4.26	58.94 ± 9.89	0.96	4.60	−0.27 ± 4.54*
Height (m)	1.53 ± 0.05	0.13	3.04	1.55 ± 0.06	0.19	3.08	+0.02 ± 0.03**
BMI (kg/m²)	25.35 ± 3.97	0.92	4.46	24.65 ± 3.87	1.00	4.76	−0.71 ± 2.17**

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