Var ID

00002657

Name

ax_pwear_aftern_6m

Label

Pwear consolidated afternoon 6m

Description

Number of valid hours worn during free-living in the afternoon quadrant (between 12:00-18:00); across the full data file (consolidated). Non-wear periods are calculated as periods of time >=60 mins where the standard deviation of each of the three axes (x; y and z of the raw; triaxial accelerometry data) is <13mg. Both of these criteria are used to determine wear probability. Consolidated variable derived from either the original data (i.e. non-imputed) or imputed data where sleep has been imputed if certain criteria of limited night data are met (i.e. where inclusion criteria ‘include’ = 2 (for details of inclusion criteria, see 'include' variable)). In instances when the imputed data has been used in the consolidated variable; this will have a binary flag (‘imputed’ = 1). This variable indicates the total wear time between 12:00-18:00; across the whole data file; in hours. 6-month measure.

Additional Information

Releases

Release 1,

Data Source

Data Context

DERIVED

Data Entry

Physical Activity

Data Availability

Available

Valid From

2022-11-17

Valid To

Present

Is Current

True

Data type

Real

Minimum Value

Maximum Value

Warning Minimum Value

Warning Maximum Value

Significant figures

Decimal Places

Maximum Length

Pattern

Format

Release 1

ax_pwear_aftern_6m

Objective PA measures

OUTPUT