Table 4

Quality assessment table

ReliabilityValidity
ScaleInternal consistencyTest-retestContentConstructResponsiveness
+++/+++: signs before the slash refer to results of validity, reliability, and responsiveness testing and signs behind the slash refer to thoroughness (strength of evidence) of validity, reliability, and responsiveness testing.
Results of validity, reliability, and responsiveness testing: 0 no numerical results reported, ? results not interpretable, − poor results, + fair results, ++ moderate results, +++ good results.
Thoroughness of validity, reliability, and responsiveness testing: 0 no reported evidence, ? results not interpretable, − poor evidence, + fair evidence, ++ moderate evidence, +++ good evidence.
PDQ-39+++/++++++/+++++/++++++/+++++/+
PDQL+++/+++0++/+++++/+++0
PIMS+++/++++++/+++?/−?/−0
PLQ+++/++++++/+++++/++++/++−/−