Description Usage Arguments Details Value Examples
Summarize sedentary features using proportions and percentiles
1 | Sedentary(final_dat, bed_time, takeoff_time)
|
final_dat |
Raw event file, will be cleaned in this function. Event file is required for this function. |
bed_time |
Sleep and wake up time log, reported by participants. Log is not required for this function. |
takeoff_time |
Take on and off time log, reported by participants. Log is not required for this function. |
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%/75%/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.
Year
The calendar year of recorded event
Month
The calendar month of recorded event
Day
The calendar day of recorded event
Dayofweek
The day of that week
Weekday_or_weekend
The recored event date is a weekday or weekend (0 for weekday, 1 for weekend)
break_per_day
Number of interrupting sedentary behavior during the given period of time
break_rate
Rate of interrupting sedentary behavior
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 sedentary 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
sed_time_in_30_and_60
Minutes Spent in Sitting/Lying Bouts (at least 30 and less 60 minutes in duration)
sed_num_in_30_and_60
Number of in Sitting/Lying Bouts (at least 30 and less 60 minutes in duration)
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