Classify body mass index (BMI) category

Source: R/bmi.R

bmi_cat returns the element-wise BMI category as factor with 6 levels:

  • Underweight (18.5 < BMI)

  • Normal weight (18.5 \(\le\) BMI < 25)

  • Overweight (25 \(\le\) BMI < 30)

  • Obesity class I (30 \(\le\) BMI < 35)

  • Obesity class II (35 \(\le\) BMI < 40)

  • Obesity class III (BMI \(\ge\) 40)

bmi_cat(bmi)

Arguments

bmi

A numeric vector with BMI data. BMI unit must be meters per square meter.

Value

A vector of class factor with 6 levels: "Underweight", "Normal weight", "Overweight", "Obesity class I", "Obesity class II" and "Obesity class III".

See also

bmi()

Examples

mass <- sample(50:100, 20)
height <- rnorm(20, mean = 1.7, sd = 0.2)
bmi <- bmi(mass, height)

bmi_cat(bmi)

#>  [1] Underweight       Normal weight     Normal weight     Underweight      
#>  [5] Normal weight     Underweight       Obesity class II  Normal weight    
#>  [9] Normal weight     Obesity class I   Normal weight     Obesity class III
#> [13] Overweight        Obesity class III Obesity class II  Obesity class I  
#> [17] Overweight        Underweight       Obesity class I   Underweight      
#> 6 Levels: Underweight Normal weight Overweight ... Obesity class III