sed_summary: Physical Activity Summary-Sedentary Proportions and...

In YukunZhang/PAactivPAL1.0: Summarize Daily Physical Activity from 'activPAL' Accelerometer Data

Description

Summarize activity measures using proportions and percentiles

Usage

sed_summary(final_dat)

Arguments

final_dat

cleaned final data that is between record getup time and sleep time

Details

Proportions of sedentary bout greater than 20/60/120 minutes is the ratio of the number of sedentary bouts greater than 20/60/120 minutes to the total number of sedentary recordings_

Total sedentary time greater than 20/60/120 minutes is the summation of the sedentary durations which are greater than 20/60/120 minutes_

To calculate 5%/25%/___/95% percentile of sedentary time, all of the recorded sedentary durations are listed and R function quantile is used to find the percentiles_

alpha_sed is defined by 1+1/M, where M is the average of log(sedentary bout length /minimum sedentary bout length)_

Proportions of sedentary time between 6:00-12:00/12:00-18:00/18:00-22:00 is the ratio of the sedentary durations to the total activity durations between 6:00-12:00/12:00-18:00/18:00-22:00_

Value

total_sed_time Total sedantary hour, same as PA_summary function output sed_hour

total_number_of_sed_bouts Total number of sedentary bouts_ It counts the number of sedentary recordings_

mean_sed_bout_length Mean sedentary bout length_ It is the average of the duration time for all sedentary activities

prop_of_sed_time_greater_20min Proportions of sedentary bout greater than 20 minutes

prop_of_sed_time_greater_60min Proportions of sedentary bout greater than 60 minutes

prop_of_sed_time_greater_120min Proportions of sedentary bout greater than 120 minutes

total_sed_time_greater_20min Total sedentary time greater than 20 minutes

total_sed_time_greater_60min Total sedentary time greater than 60 minutes

total_sed_time_greater_120min Total sedentary time greater than 120 minutes

percentile_sed_time_5 5% Percentile of sedentary time

percentile_sed_time_25 25% Percentile of sedentary time

percentile_sed_time_50 50% Percentile of sedentary time

percentile_sed_time_75 75% Percentile of sedentary time

percentile_sed_time_95 95% Percentile of sedentary time

alpha_sed alpha of sendataty time, see details_

prop_sed_time_6_12 Proportions of sedentary time between 6:00-12:00

prop_sed_time_12_18 Proportions of sedentary time between 12:00-18:00

prop_sed_time_18_22 Proportions of sedentary time between 18:00-22:00

Examples

 data(sampledata);sed_summary(sampledata)

YukunZhang/PAactivPAL1.0 documentation built on May 10, 2019, 1:12 a.m.