Table 1.

Keyword combinations used in the literature search

Keyword combinations
Patient Reported Outcome Measures OR patient reported outcome measure1 OR PROM1OR PRO1 OR patient reported outcome1 OR patient outcome1 OR clinical outcomes assessment	AND	Guidance OR guidelineOR recommend1 OR good practice OR best practice OR instrument development OR adapt1 OR modif1 OR develop1 OR establish1 OR efficien1 OR standard1 OR measurement properties

¹It indicates where truncated versions of the wrord was used. Search was restricted to the last 10 yr and publications in the English lang.