Bias in Self-reported Prepregnancy Weight Across Maternal and Clinical Characteristics.
Andrea J SharmaJoanna E BulkleyAshley B StoneburnerPadmavati DandamudiMichael LeoWilliams M CallaghanKimberly K VescoPublished in: Maternal and child health journal (2021)
Among the 16,227 included pregnancies, close agreement (± 1 kg or ≤ 2%) between self-reported and closest-measured weight was 44% and 59%, respectively. Overall, self-reported weight averaged 1.3 kg (SD 3.8) less than measured weight. Underreporting was higher among women with elevated BMI category, late prenatal care entry, and pregnancy outcome other than live/stillbirth (p < .05). Using self-reported weight, BMI was correctly classified for 91% of pregnancies, but ranged from 70 to 98% among those with underweight or obesity, respectively. Results were similar using usual weight as gold standard. CONCLUSIONS FOR PRACTICE: Accurate measure of prepregnancy weight is essential for clinical guidance and surveillance efforts that monitor maternal health and evaluate public-health programs. Identification of characteristics associated with misreport of self-reported weight can inform understanding of bias when assessing the influence of prepregnancy BMI or GWG on health outcomes.
Keyphrases
- weight gain
- body mass index
- birth weight
- public health
- weight loss
- physical activity
- healthcare
- body weight
- primary care
- metabolic syndrome
- mental health
- palliative care
- pregnant women
- quality improvement
- risk assessment
- mass spectrometry
- social media
- adipose tissue
- high resolution
- chronic pain
- gestational age
- health information