Time modelling and time‑varying effects in a stepped‑wedge trial of a person‑centred intervention for people with dementia in long‑term care: A secondary analysis

# Project title Time modelling and time‑varying effects in a stepped‑wedge trial of a person‑centred intervention for people with dementia in long‑term care: A secondary analysis # Brief project overview This is Data coming out of the IPOS-Dem project, a Stepped-wedge Cluster Randomised Trial (SW-CRT). Please make shure to check out the SW-CRT protocol for more details at https://www.doi.org/10.1111/jan.14953. # Contributors Frank Spichiger, Andrea Koppitz, André Meichtry ## Repository overview |-- readme.md |-- 01_analysis.R |-- data |--person-profile_swcrt_dataset.csv |-- output |--subscales.html # Applicable instructions The R files were generated using R 4.5.1 in RStudio 2026.01.1+403 for MacOS X you can run them using free software but will need to install R, Rstudio and the packages at the start of the R file. # Additional resources - Final study report: https://doi.org/10.1016/j.jamda.2024.105351 - Main study protocol: https://www.doi.org/10.1111/jan.14953 - QUALIDEM measure used: https://doi.org/10.1186/1477-7525-11-91 - Pos-Pal consortium with more information on the measure: https://www.pos-pal.org - IPOS-Dem translation and adaption: https://www.doi.org/10.1186/s41687-022-00420-7 - IPOS-Dem inter-rating reliability: https://doi.org/10.1371/journal.pone.0286557