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Stat Med. 1995 Jul 15;14(13):1417-36.

Calculation of unconditional and conditional reference intervals for foetal size and growth from longitudinal measurements.

Author information

1
Medical Statistics Unit, Royal Postgraduate Medical School, London, U.K.

Abstract

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.

PMID:
7481181
DOI:
10.1002/sim.4780141303
[Indexed for MEDLINE]

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