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Calculation of unconditional and conditional reference intervals for foetal size and growth from longitudinal measurements
Author(s) -
Royston Patrick
Publication year - 1995
Publication title -
statistics in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.996
H-Index - 183
eISSN - 1097-0258
pISSN - 0277-6715
DOI - 10.1002/sim.4780141303
Subject(s) - statistics , econometrics , longitudinal data , mathematics , computer science , data mining
Methods for estimating unconditional and conditional reference intervals for foetal size and growth based on longitudinal observations are presented. The methods are based on simple random‐effects regression models and involve transforming both the response and the covariate (timepoint). A dataset from a designed longitudinal study of foetal size is analysed in detail as a motivating example.