Participant and trial characteristics reported in predictive analyses of trial attrition: An umbrella review of systematic reviews of randomised controlled trials across multiple conditions

This repository contains the R scripts and extracted data that was used in the synthesis of this umbrella review. Folder contents are described below.

Data

Contains the prepared data for synthesis, lookup tables and original extracts

Prepared datasets - Data used for synthesis

1. prepared_participant_chars - Participant-level characteristic data prepared for synthesis
2. prepared_ramstar - R-AMSTAR quality appraisal data prepared for synthesis
3. prepared_studies - Included study characteristics prepared for synthesis
4. prepared_trial_chars - Trial-level characteristic data prepared for synthesis

Extracts - The original extracts separated into:

1. Extract_participants - Participant-level characteristic extracts
2. Extract_ramstar - R-AMSTAR quality appraisal
3. Extract_studies - Included study characteristics
4. Extract_trials - Trial-level characteristic extracts

Lookups - Lookup tables used by the analysis scripts

1. lookup_attrition_oms - Definitions of attrition outcomes, along with tidied versions
2. lookup_authors - Distiller reference ID and first author with year
3. lookup_authors_conditions - First author with year and condition studied
4. lookup_conditions - Original condition terms and groupings applied
5. lookup_participant_chars - Original characteristic terms and groupings applied
6. lookup_trial_chars - Original characteristic terms and groupings applied

Scratch_data

Contains scratch data created for tidying and grouping data

1. grouped_unique_conditions - Grouping of conditions
2. tidied_unique_attrition_oms - Tidied definitions of attrition outcomes
3. tidied_unique_participant_chars - Tidied unique participant characteristics
4. tidied_unique_trial_chars - Tidied unique trial characteristics
5. toGroup_unique_conditions - Unique conditions prior to grouping
6. toTidy_unique_attrition_oms - Unique attrition outcome definitions to tidy
7. toTidy_unique_participant_chars - Unique participant characteristics to tidy
8. toTidy_unique_trial_chars - Unique trial characteristics to tidy

Scripts

Scripts used for data preparation and synthesis

1. 00_packages_functions_etc - Packages, functions and regex used for pattern finding
2. 01_prepare_data - Data preparation
3. 02_heatmaps - Heatmap generation
4. 03_ramstar - R-AMSTAR summaries
5. 04_summarise - Summarising data