Subset of growth data from the collaborative perinatal project (CPP).
cpp_imputed
drops observations for which the haz
column is
NA
, and imputes all other observations as 0. This is only for the
purposes of simplifying testing and examples.
data(cpp)
A data frame with 1,912 repated-measures observations and 500 unique subjects:
Subject ID
Age since birth at examination (days)
Weight (kg)
Standing height (cm)
Recumbent length (cm)
BMI (kg/m**2)
Weight for age z-score
Length/height for age z-score
Weight for length/height z-score
BMI for age z-score
Investigational Site ID
Sex (num)
Sex
Maternal breastfeeding status (num)
Maternal breastfeeding status
Gestational age at birth (days)
Birth weight (gm)
Birth length (cm)
APGAR Score 1 min after birth
APGAR Score 5 min after birth
Maternal age at birth of child (yrs)
Maternal race (num)
Maternal race
Mothers marital status (num)
Mothers marital status
Mother, years of education
Socio-economic status (num)
Socio-economic status
Maternal parity
Maternal num pregnancies
Maternal smoking status
Num cigarettes mom smoked per day
Maternal risk factors
https://catalog.archives.gov/id/606622
Broman, Sarah. 'The collaborative perinatal project: an overview.' Handbook of longitudinal research 1 (1984): 185-227.
data(cpp) head(cpp)#> subjid agedays wtkg htcm lencm bmi waz haz whz baz siteid sexn #> 1 1 1 4.621 55 55 15.27603 2.38 2.61 0.19 1.35 5 1 #> 2 1 123 8.760 NA NA NA 1.99 NA NA NA 5 1 #> 3 1 366 14.500 79 79 23.23346 3.84 1.35 4.02 3.89 5 1 #> sex feedingn feeding gagebrth birthwt birthlen apgar1 apgar5 mage mracen #> 1 Male 90 Unknown 287 4621 55 8 9 21 5 #> 2 Male 90 Unknown 287 4621 55 8 9 21 5 #> 3 Male 90 Unknown 287 4621 55 8 9 21 5 #> mrace mmaritn mmarit meducyrs sesn ses parity gravida smoked #> 1 White 1 Married 12 50 Middle 1 1 0 #> 2 White 1 Married 12 50 Middle 1 1 0 #> 3 White 1 Married 12 50 Middle 1 1 0 #> mcignum comprisk #> 1 0 none #> 2 0 none #> 3 0 none #> [ reached getOption("max.print") -- omitted 3 rows ]