birth {catdata} | R Documentation |
Birth
Description
The birth
data contain information about birth and pregnancy of 775 children that were born alive in the time from 1990 to 2004. The data were collected from internet users recruited on french-speaking pregnancy and birth websites
Usage
data(birth)
Format
A data frame with 775 observations on the following 25 variables.
IndexMother
ID variable
Sex
Sex of child: male = 1, female = 2
Weight
Weight of child at the birth in grams
Height
Height of child at the birth in centimeter
Head
Head circumference of child at the birth in centimeter
Month
Month of birth from 1 to 12
Year
Year of birth
Country
Country of birth: France (FR), Belgium (BE), Switzerland (CH), Canada (CA), Great Britain (GB), Germany (DE), Spain (ES), United States (US)
Term
Term of pregnancy in weeks from the last menstruation
AgeMother
Age of mother on the day of birth
Previous
Number of pregnancies before
WeightBefore
Weight of mother before the pregnancy
HeightMother
Height of mother in centimeter
WeightEnd
Weight of mother after the pregnancy
Twins
Was the pregnancy a multiple birth? no = 0, yes = 1
Intensive
Days that child spent in intensive care unit
Cesarean
Has the child been born by cesarean section? no = 0, yes = 1
Planned
Has the cesarean been planned? no = 0, yes = 1
Episiotomy
Has an episiotomy been made? no = 0, yes = 1
Tear
Did a perineal tear appear? no = 0, yes = 1
Operative
Has an operative aid like delivery forceps or vakuum been used? no = 0, yes = 1
Induced
Has the birth been induced artificially? no = 0, yes = 1
Membranes
Did the membrans burst before the beginning of the throes? no = 0, yes = 1
Rest
Has a strict bed rest been ordered to the mother for at least one month during the pregnancy? no = 0, yes = 1
Presentation
Presentation of the child before the birth? cephalic presentation = 1, pelvic presentation = 2, other presentation (e.g. across) = 3
Source
see Boulesteix (2006), Maximally selected chi-squared statistics for ordinal variables, Biometrical Journal, 48, 451–462.
Examples
## Not run:
##look for:
if(interactive()){vignette("loglinear-birth")}
if(interactive()){vignette("multivariate-birth1")}
if(interactive()){vignette("multivariate-birth2")}
## End(Not run)