zBMI: Scoring of zBMI and zBMI category

In wzhou7/Fruved: Score Fruved Instruments

Scoring of zBMI and zBMI category

Description

The function returns the age (measured in months), zBMI, and zBMI category given the data.

Usage

Score_zBMI(data,age_month=FALSE)

Arguments

data	The input data
age_month	An indicator whether age measured in months is given or not. If age_month=FALSE, then the date of birth (DEM2AGE_YEAR, DEM2AGE_MONTH, DEM2AGE_Date) and survey date (StartDate) are required. If age_month=TRUE, convert the age so that it is measured in the unit of month.

Format

The data needs the following variables (The coded values are showed after the question text):

ageinmonth (Needed if age_month=FALSE)

The age measured in the unit of month

DEM2AGE_YEAR (Needed if age_month=TRUE)

What year were you born in?

(1) 1920; (2) 1921; ... (90) 2009; (99) Choose not to answer

DEM2AGE_MONTH (Needed if age_month=TRUE)

What month were you born in?

(1) Jan; (2) Feb; ... (12) Dec; (13) Choose not to answer

DEM2AGE_Date (Needed if age_month=TRUE)

What day were you born on?

(1) 1; (2) 2; ... (31) 31; (32) Choose not to answer

StartDate (Needed if age_month=TRUE)

System generated time of filling the survey, must have the format "mm/dd/yy hh:mm"

DEM12GENDER

What is your gender?

(1) Male; (2) Female; (3) Other; (4) Choose not to answer

BMI

Computed from height and weight

Value

zBMI	A continuous value
zBMI_Category	A categorical value in one of the four levels: Underweight, Normal, Overweight, Obese

Author(s)

Wangcheng Yan, Wenjun Zhou

References

https://www.cdc.gov/growthcharts/percentile_data_files.htm

wzhou7/Fruved documentation built on Feb. 4, 2024, 2:32 p.m.