secher {ISwR}

Birth weight and ultrasonography

Description

The secher data frame has 107 rows and 4 columns. It contains ultrasonographic measurements of fetuses immediately before birth and their subsequent birth weight.

Usage

secher

Format

This data frame contains the following columns:

bwt

a numeric vector, birth weight (g).

bpd

a numeric vector, biparietal diameter (mm).

ad

a numeric vector, abdominal diameter (mm).

no

a numeric vector, observation number.

Source

D. Kronborg and L.T. Skovgaard (1990), Regressionsanalyse, Table 3.1, FADLs Forlag (in Danish).

Secher et al. (1987), European Journal of Obstetrics, Gynecology, and Reproductive Biology, 24: 1–11.

Examples

plot(bwt~ad, data=secher, log="xy")