NHANES {hexbin} | R Documentation

## NHANES Data : National Health and Nutrition Examination Survey

### Description

This is a somewhat large interesting dataset, a data frame of 15 variables (columns) on 9575 persons (rows).

### Usage

    data(NHANES)

### Format

This data frame contains the following columns:

Cancer.Incidence
  binary factor with levels `No` and `Yes`.
Cancer.Death
  binary factor with levels `No` and `Yes`.
Age
  numeric vector giving age of the person in years.
Smoke
  a factor with levels `Current`, `Past`, `Nonsmoker`, and `Unknown`.
Ed
  numeric vector of {0,1} codes giving the education level.
Race
  numeric vector of {0,1} codes giving the person's race.
Weight
  numeric vector giving the weight in kilograms
BMI
  numeric vector giving Body Mass Index, i.e., `Weight/Height^2` where Height is in meters, and missings (61% !) are coded as `0` originally.
Diet.Iron
  numeric giving Dietary iron.
Albumin
  numeric giving albumin level in g/l.
Serum.Iron
  numeric giving Serum iron in ug/l.
TIBC
  numeric giving Total Iron Binding Capacity in ug/l.
Transferin
  numeric giving Transferin Saturation which is just `100*serum.iron/TIBC`.
Hemoglobin
  numeric giving Hemoglobin level.
Sex
  a factor with levels `F` (female) and `M` (male).

### Source

unknown

### Examples

    data(NHANES)
    summary(NHANES)
    ## Missing Data overview :
    nNA <- sapply(NHANES, function(x)sum(is.na(x)))
    cbind(nNA[nNA > 0])
    # Which are just these 6 :
    ## Not run:
    Diet.Iron         141
    Albumin           252
    Serum.Iron       1008
    TIBC              853
    Transferin       1019
    Hemoglobin        759
    ## End(Not run)

[Package hexbin version 1.18.0 Index]