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Gaceta Sanitaria
Print version ISSN 0213-9111
Abstract
MORENO-GALARRAGA, Laura et al. Parent-reported birth information: birth weight, birth length and gestational age. Validation study in the SENDO project. Gac Sanit [online]. 2021, vol.35, n.3, pp.224-229. Epub Dec 20, 2021. ISSN 0213-9111. https://dx.doi.org/10.1016/j.gaceta.2019.08.012.
Objective
To test the validity of parent-reported birth information obtained through an online, self-administered questionnaire.
Method
The SENDO project is a prospective and dynamic paediatric cohort of Spanish children aged 4 to 6 years old at recruitment. Objective data from medical birth records were compared to parent-reported data getting intra-class correlation coefficients (ICC) for quantitative variables and weighted Kappa Index for qualitative ones. Percentage of responders and of total agreement was also evaluated.
Results
Parental response rate was over 99% for birth weight and gestational age and 76% for birth length. ICC for birth weight was 0.95 (95% confidence interval [95%CI]: 0.94-0.96) and 0.78 (95%CI: 0.73-0.83) for birth length, both showing very high correlations. The total agreement percentage for gestational age was 97%, and Kappa weighted index was 0.90 (95%CI: 0.89-0.90), showing a very high agreement as well.
Conclusions
We found high correlations and excellent agreement in parent-reported birth data 4 to 6 years after delivery. Our results show parent-reported birth data, especially birth weight, are valid for use in epidemiological research.
Keywords : Birth weight; Gestational age; Validation studies.