secher {ISwR} | R Documentation |
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")
[Package ISwR version 2.0-8 Index]