Quantifying Recall and Processing Error when Utilizing the Compendium of Physical Activities in Physical Activity Recall Surveys, A Disucssion
Quantifying Recall and Processing Error when Utilizing the Compendium of Physical Activities in Physical Activity Recall Surveys, A Disucssion
Date: | Friday, March 01 |
Time: | 12:00 pm -- 1:00 pm |
Place: | Snedecor 2113 |
Speaker: | Dave Osthus and Bryan Stanfill, Department of Statistics, ISU |
Abstract:
The Compendium of Physical Activities (Compendium) was developed to link specific physical activities performed in various settings to an associated metabolic equivalent (MET) intensity level. Physical activity recalls (PARs) are commonly used instruments that gather physical activity information on individuals. Oftentimes, PARs and the Compendium are used together; the physical activity information from the PAR is converted into METs via the Compendium, resulting in MET intensities of physical activity for each individual. This process of gathering and converting information is not without error, however. The PAR process is susceptible to cognitive limitation for recalling activity from the past (recall error), while the conversion of physical activity into METs is susceptible to processing error.
We will discuss our ideas and invite feedback on how to quantify these sources of error using data from the Physical Activity Measurement Survey (PAMS).