secher | R Documentation |
The secher
data frame has 107 rows and 4 columns. It contains
ultrasonographic measurements of fetuses immediately before birth and
their subsequent
birth weight.
secher
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.
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.
plot(bwt~ad, data=secher, log="xy")
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