Cohort Attrition: Multi-Site, Exploratory, Cross-Sectional Analysis


Created

2024-06-05

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Domain

Category

Parameters

Publisher

PEDSnet

Abstract

This check provides an exploratory analysis of patient eligibility criteria for a study. It summarizes each step of attrition criteria in the cohort construction for a given site.

Data Requirements

attrition_tbl , multi_or_single_site , anomaly_or_exploratory , start_step_num , var_col , p_value

Probe

Clinical Assessment

Access Package

# install.packages(""devtools"") devtools::install_github('ssdqa/https://github.com/ssdqa/cohortattrition')

Visualization Output

This check outputs a line graph visualization with a reference table. The user inputs the attrition step at which the visualization should begin and selects a variable to facet by (num_pts, prop_retained_start, prop_retained_prior or prop_diff_prior). Each line represents a site, distinguishable by color. A thick red line represent the ‘All Site Median’. Hovering over any point along the graph displays a tooltip with the site name, the description of the attrition step, the patient count and the value of the user-selected variable (ex: prop_retained_start). The accompanying reference table describes all the attrition steps.

Raw Output

The raw data output of this check produces nine columns of data:

Column Data Type Definition
num_pts numeric the number of patients associated with a given attrition step - provided in the attrition table by the user
step_number numeric an integer indicating the step associated with the attrition - provided in the attrition table by the user
attrition_step character a string describing the attrition step - provided in the attrition table by the user
site character the name of the site being targeted
... any additional columns that were included in the user-provided attrition table will also appear in the output
prop_retained_prior numeric the proportion of patients retained from the previous attrition step
ct_diff_prior numeric the difference in patient count between a given attrition step and the previous step
prop_diff_prior numeric the proportion difference between a given attrition step and the previous step
prop_retained_start numeric the proportion of patients retained from the user-defined “start” attrition step

Affiliation(s)

PEDSnet Data Coordinating Center

Funder(s)

This research was made possible through the generous support of Patient-Centered Outcomes Research Institute. The statements presented in this work are solely the responsibility of the author(s) and do not necessarily represent the views of PCORI, its Board of Governors, or its Methodology Committee.

Provenance

Description

Development Code

https://github.com/ssdqa/cohortattrition

Clinical Subjects Headings

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Creative Commons license

a CC-BY Attribution 4.0 License.
Except where otherwised noted, this item's license is described as a CC-BY Attribution 4.0 License.

Cite this Data Quality Check

PEDSnet Data Coordinating Center. (2024, June). Cohort Attrition: Multi-Site, Exploratory, Cross-Sectional Analysis. [D Q Check]. PEDSpace Knowledge Bank. https://doi.org/10.24373/pdsp-431