TRSbook (version 1.0.2)

BIRTH.WEIGHT: Weight at Birth

Description

This study focused on risks associated with low weight at birth; the data were collected at the Baystate Medical Centre, Massachusetts, in 1986. Physicians have been interested in low weight at birth for several years, because underweight babies have high rates of infant mortality and infant anomalies. The behaviour of the mother-to-be during pregnancy (diet, smoking habits) can have a significant impact on the chances of having a full-term pregnancy, and thus of giving birth to a child of normal weight. The data file includes information on 189 women (identification number: ID) who came to the centre for consultation. Weight at birth is categorized as low if the child weighs less than 2,500 g.

Usage

data(BIRTH.WEIGHT)

Format

A data frame with 189 observations measured on the following 11 variables.

ID

Numeric. Identification.

AGE

Numeric. Age of mother.

LWT

Numeric. Weight of mother at last menstrual period.

RACE

1=white, 2=black, 3=other. Race of mother.

SMOKE

Yes=1, No=0. Smoking during pregnancy.

PTL

0=none, 1=one, 2=two, etc. Number of premature births in medical history.

HT

Yes=1, No=0. Medical history of hypertension.

UI

Yes=1, No=0. Uterine irritability.

FVT

0=none, 1=one, etc. Number of medical consultations during first trimester

BWT

Numeric. Grams.

LOW

Yes=1, No=0. Weight at birth less than 2,500g

Examples

# NOT RUN {
data(BIRTH.WEIGHT)
str(BIRTH.WEIGHT) 
# }