Mandible | R Documentation |

Mandible Data.

data(Mandible)

Data from 167 fetuses, especially:

- age
gestational age in weeks.

- length
mandible length in mm.

The data was originally published by Chitty et al., 1993, and analyzed in
Royston and Altman, 1994 (the data is given there). Only measurements with
`age <= 28`

were used in this analysis.

L. S. Chitty and S. Campbell and D. G. Altman (1993),
Measurement of the fetal mandible – feasibility and
construction of a centile chart., *Prenatal Diagnosis*,
**13**, 749–756.

P. Royston and D. G. Altman (1994), Regression Using
Fractional Polynomials of Continuous Covariates: Parsimonious
Parametric Modelling. *Applied Statistics*, **43**, 429–453.

data(Mandible) lm(length ~ age, data=Mandible, subset=(age <= 28))

lmtest documentation built on March 22, 2022, 1:06 a.m.

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