It showed significant improvements in health status after surgery and tests of validity, reliability and responsiveness were all highly significant with p values of <0.001. 3 9 17–22 Limitations There are a number of limitations to this study, namely the relatively small number of patients studied and the fact that the postoperative questionnaire was only conducted once at 6 weeks.
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Patient-Reported Outcome Measures (PROMS) in patients undergoing heart valve surgery: why should we measure them and which instruments should we use?
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