However, as noted by Leucht et al. [ 9], these symptom rating scales are not familiar to or commonly used by practicing clinicians, and categorical definitions of "response" and "nonresponse" based on valid scale-derived cut-offs may offer more clinical usefulness.
Measurements were done by questionnaires based on valid scales.
As a consequence, some data was not available, for instance information on appetite measured with a valid scale and information on dietary intake.
Unidimensionality is a necessary condition for reliable and valid scales.
The health outcome measures are based on valid and reliable scales, when available.
It is a brief, content-valid scale designed to be completed by caregivers as appropriate patient surrogate responders based on their direct observations.
The SRQ was filled out during the consultation and was considered valid for assessment when indicated by the scores on both validity scales.
They travelled on valid passports.
Weigh yourself on said scale.
Thus, while all scores were derived from a valid PRO scale, the analyses were based on different item sets in each country.
Rasch analyses were undertaken to determine whether an internationally valid, unidimensional scale could be developed that would inform on the direct impact of AD on the child.
