The phrase "and validated in multiple" is correct and usable in written English.
It can be used when discussing research, studies, or findings that have been confirmed or supported by various sources or methods.
Example: "The results of the experiment were promising and validated in multiple independent studies."
Alternatives: "and confirmed in several" or "and corroborated in multiple".
What should be avoided in such circumstances is the invention of a new and untested questionnaire; instead, a diagnostic questionnaire that has been used and validated in multiple languages and cultures can be assumed to have some validity in countries, in languages (subject to good translation) and among cultures where direct validation cannot be performed.
We have created a disease-specific HRQOL instrument.The chronic acquired polyneuropathy patient-reported index (CAP-PRI) was developed and validated in multiple steps.
What should then be avoided is the invention of a new and untested questionnaire, rather than adopt one that has at least been used previously and validated in multiple languages and cultures.
However, an important feature of these commercially available tests is that they are standardized and validated in multiple independent studies.
Participating patients were also given the EUROPEP questionnaire, which was developed by an international group and translated into and validated in multiple languages.
This model explicitly represents the main cause of ART failure, nonadherence leading to the accumulation of genotypic resistance, and has been well-validated in multiple populations (Braithwaite et al., 2011).
For example, we showed an exon candidate that resulted in a premature stop codon was experimentally-validated in multiple rice cultivars and wild species (Additional file 6), suggesting that this exon might be of biological significance in rice transcriptome.
We were unable to identify appropriate validated questionnaires in multiple languages, and so no quantitative data could be obtained to support the findings.
To our knowledge, this is the first multicentre study to investigate this issue using the same validated questionnaire in multiple countries.
