Methods and Results We searched MEDLINE, Embase, and CINAHL for studies published between January 2000 and July 2020 in journals with an impact factor ≥10. 
MEDLINE
Methods and Results We searched MEDLINE, Embase, and CINAHL for studies published between January 2000 and July 2020 in journals with an impact factor ≥10. 
Embase
Methods and Results We searched MEDLINE, Embase, and CINAHL for studies published between January 2000 and July 2020 in journals with an impact factor ≥10. 
CINAHL
We assessed the quality of PRO reporting using the Consolidated Standards of Reporting Trials (CONSORT) PRO extension.  RCTs reported a median of 4 (interquartile interval , 3-6) of a possible of 11 CONSORT PRO items. 
CONSORT