Design requirements	Very good	Adequate	Doubtful	Inadequate	NA
1. Were patients stable in the time between the administration of the repeated measurements on the construct to be measured?	Yes (evidence provided)	Reasons to assume standard was met	Unclear if standard was met	No	NA
2. Was the time interval between the measurements appropriate?	Yes		Doubtful if standard was met OR time interval not stated	No	NA
3. Were the measurement conditions similar for the measurements—except for the condition being evaluated as a source of variation?	Yes (evidence provided)	Reasons to assume standard was met, OR change was unavoidable	Unclear if standard was met	No	NA
4. Did the professional(s) administer the measurement without knowledge of scores or values of other repeated measurement(s) in the same patients?	Yes (evidence provided)	Reasons to assume standard was met	Unclear if standard was met	No	NA
5. Did the professional(s) assign the scores or determined the values without knowledge of the scores or values of other repeated measurement(s) in the same patients?	Yes (evidence provided)	Reasons to assume standard was met	Unclear if standard was met	No
6. Were there any other important flaws in the design or statistical methods of the study?	No		Minor methodological flaws	Yes