R Dataset / Package mosaicData / Gestation
Data from the Child Health and Development Studies
Birth weight, date, and gestational period collected as part of the Child Health and Development Studies in 1961 and 1962. Information about the baby's parents — age, education, height, weight, and whether the mother smoked is also recorded.
A data frame with 1236 observations on the following variables.
pluralty5 = single fetus
outcome1 = live birth that survived at least 28 days
datebirth date where 1096=January 1, 1961
gestationlength of gestation (in days)
sexinfant's sex (1=male, 2=female)
wtbirth weight (in ounces)
paritytotal number of previous pregnancies (including fetal deaths and still births)
racemother's race: 0-5=white 6=mex 7=black 8=asian 9=mixed
agemother's age in years at termination of pregnancy
edmother's education: 0= less than 8th grade, 1 = 8th -12th grade - did not graduate, 2= HS graduate–no other schooling, 3= HS+trade, 4=HS+some college, 5=College graduate, 6=Trade school, 7=HS unclear
htmother's height in inches to the last completed inch
wt.1mother's prepregnancy weight (in pounds)
dracefather's race (a factor with levels equivalent to mother's race)
dagefather's age (in years)
dedfather'ed education (same coding as mother's education)
dhtfather's height in inches to the last completed inch
dwtfather's weight (in pounds)
maritalmarital status: 1=married, 2=legally separated, 3=divorced, 4=widowed, 5=never married
incfamily yearly income in $2500 increments: 0=under 2500, 1=2500-4999, ..., 8=12,500-14,999, 9=15000+
smokedoes mother smoke? 0=never, 1=smokes now, 2=until current pregnancy, 3=once did, not now
timetime since quitting smoking: 0=never smoked, 1=still smokes, 2=during current preg, 3=within 1 yr, 4=1 to 2 years ago, 5= 2 to 3 yr ago, 6= 3 to 4 yrs ago, 7=5 to 9yrs ago, 8=10+yrs ago, 9=quit and don't know
numbernumber of cigs smoked per day for past and current smokers 0=never, 1=1-4, 2=5-9, 3=10-14, 4=15-19, 5=20-29, 6=30-39, 7=40-60, 8=60+, 9=smoke but don't know
The data were presented by Nolan and Speed to address the question of whether there is a link between maternal smoking and the baby's health.
The book by Nolan and Speed describes the data in more detail and provides an Internet site for accessing them: http://www.stat.berkeley.edu/users/statlabs/
D Nolan and T Speed. Stat Labs: Mathematical Statistics Through Applications (2000), Springer-Verlag.
Dataset imported from https://www.r-project.org.
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