Comorbidity and health-related quality of life in people with a chronic medical condition in randomised clinical trials: An individual participant data meta-analysis.
Elaine W ButterlyPeter HanlonAnoop S V ShahLaurie John HanniganEmma McIntoshJim LewseySarah D WildBruce GuthrieFrances S MairDavid M KentSofia DiasNicky J WeltonDavid A McAllisterPublished in: PLoS medicine (2023)
A prespecified protocol was registered on PROSPERO (CRD42018048202).