Data example from the 2003-2004 National Health and Nutrition Examination Survey (NHANES)
dataset. This example includes 184 individuals, giving 1,288 daily profiles. It only includes
valid subjects with at least three complete days, obtained as a subset of acceldata_list
using the function valid.subjects().
Usage
data(acceldata2_list)Format
A list with 4 components:
- PA
An integer matrix with 1,288 rows (daily profiles) and 1,440 columns (minute-by-minute accelerometer counts).
- label
A data frame with 1,288 observations and 3 variables:
- id
Integer identifier of the profile
- day
Integer indicating the day label
- personid2
Integer providing an alternative identifier of the individual
- flag
A numeric matrix with the same dimensions as
PA, containing quality indicators (e.g., 0 = valid, 1 = flagged).- demo
A data frame with 184 observations and 5 variables:
- personid
Integer identifying the participant
- age
Integer indicating age
- sex
Factor with 2 levels indicating sex
- bmi
Numeric variable with body mass index
- race
Factor with 2 levels indicating race
Details
The dataset name has been kept as 'acceldata2_list' to avoid confusion with other datasets in the R ecosystem. This naming convention helps distinguish this dataset as part of the healthmotionR package and assists users in identifying its specific characteristics. The suffix 'list' indicates that the dataset is stored as a list containing multiple components. The original content has not been modified in any way.