simLong {JointAI}

Simulated Longitudinal Data in Long and Wide Format

Description

This data was simulated to mimic data from a longitudinal cohort study following mothers and their child from birth until approximately 4 years of age. It contains 2400 observations of 200 mother-child pairs. Children's BMI and head circumference was measured repeatedly and their age in months was recorded at each measurement. Furthermore, the data contain several baseline variables with information on the mothers' demographics and socio-economic status.

Usage

simLong

simWide

Format

simLong: A data frame in long format with 2400 rows and 16 variables

simWide: A data frame in wide format with 200 rows and 81 variables

An object of class data.frame with 2400 rows and 16 columns.

An object of class data.frame with 200 rows and 81 columns.

Baseline covariates

(in simLong and simWide)

GESTBIR

gestational age at birth (in weeks)

ETHN

ethnicity (binary: European vs. other)

AGE_M

age of the mother at intake

HEIGHT_M

height of the mother (in cm)

PARITY

number of times the mother has given birth (binary: 0 vs. >=1)

SMOKE

smoking status of the mother during pregnancy (3 ordered categories: never smoked during pregnancy, smoked until pregnancy was known, continued smoking in pregnancy)

EDUC

educational level of the mother (3 ordered categories: low, mid, high)

MARITAL

marital status (3 categories)

ID

subject identifier

Long-format variables

(only in simLong)

time

measurement occasion/visit (by design, children should be measured at/around 1, 2, 3, 4, 7, 11, 15, 20, 26, 32, 40 and 50 months of age)

age

child age at measurement time in months

bmi

child BMI

hc

child head circumference in cm

hgt

child height in cm

wgt

child weight in gram

sleep

sleeping behaviour of the child (3 ordered categories)

Wide-format variables

(only in simWide)

age1, age2, age3, age4, age7, age11, age15, age20, age26, age32, age40, age50

child age at the repeated measurements in months

bmi1, bmi2, bmi3, bmi4, bmi7, bmi11, bmi15, bmi20, bmi26, bmi32, bmi40, bmi50

repeated measurements of child BMI

hc1, hc2, hc3, hc4, hc7, hc11, hc15, hc20, hc26, hc32, hc40, hc50

repeated measurements of child head circumference in cm

hgt1, hgt2, hgt3, hgt4, hgt7, hgt11, hgt15, hgt20, hgt26, hgt32, hgt40, hgt50

repeated measurements of child height in cm

wgt1, wgt2, wgt3, wgt4, wgt7, wgt11, wgt15, wgt20, wgt26, wgt32, wgt40, wgt50

repeated measurements of child weight in gram

sleep1, sleep2, sleep3, sleep4, sleep7, sleep11, sleep15, sleep20, sleep26, sleep32, sleep40, sleep50

repeated measurements of child sleep behaviour (3 ordered categories)

Examples

 summary(simLong)
 summary(simWide)