YFHS-WHO+ Questionnaire: validation of a measure of youth-friendly primary care services

Purpose: To develop and validate a research tool to measure the youth friendliness of primary care services from a client's perspective.

Methods: The questionnaire was initially developed in English, but as it was to be used in Bosnia and Herzegovina (BiH), it was validated in the language of this country. Items were adapted from two sources: a reproductive health services quality improvement questionnaire from the World Health Organization, and an Australian survey used to assess youth-friendly primary care services. An English-speaking international panel reviewed the list of items for face validity. After translation-back translation, the questionnaire was pretested with adolescent patients from a family practice in BiH. The stability and construct validation were then conducted with 60 young people from six different health services in BiH. Items for the final questionnaire were selected using item response theory.

Results: The validation and item response analysis led to a 49-item tool. Test-retest stability at 1 week was excellent (mean κ: .93). Construct validation was supported by the fact that services with the highest and the lowest scores on the questionnaire were also those that had many and few, respectively, youth-friendly characteristics, as assessed by experts, on a predefined evaluation grid. Services seeing a higher proportion of adolescents also had higher scores on the questionnaire.

Conclusions: This study supports the validity of the YFHS-WHO+ questionnaire for assessing the level of youth friendliness of family medicine services for research purposes. Further validations in English and French will allow wider use of this tool in the future.