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Parental height was missing in 53% of the children.
If only weight or height was missing, the linear regression equation was used to estimate the missing value.
Height was missing from 1.4% of records and was replaced with the mean height of the same age and sex.
If a patient's height was missing from the anesthetic record, we obtained it through the research patient data registry.
First, height was missing for a substantial proportion of patients; however, results were similar when the multivariate model was performed with and without this variable.
Self-reported BMI one year prior to reference date (diagnosis date for cases and comparable date for controls) was calculated using measured height at interview and self-reported weight, except for 26 women for whom measured height was missing and instead, self-reported height was used.
Similar(54)
If both weight and height were missing, the missing height was assigned the sex-specific median value and missing weight value calculated from the linear regression equation.
The father's height is missing in approximately 10% of the interviews.
For example, at the survey of age 6 months, birth weight and birth height were collected but the current weight and height were missing.
We excluded 53 subjects from the analyses because (1) the reported menarcheal age was younger than the age at a previous examination, (2) the first report of menarcheal age was made after age 30 y, (3) menarcheal age was never reported, or (4) data on premenarcheal weight or height were missing.
The aim of this project was to develop a prediction model for growth in response to GH in prepubertal children, relying only on data that could be obtained in different health settings, and also in adopted and immigrant children (i.e. where information on birth size, gestational age, growth during early life and parental heights are missing).
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com