Feasibility, reliability, and validity of adolescent health status measurement by the Child Health Questionnaire Child Form (CHQ-CF): internet administration compared with the standard paper version

This study supports the feasibility, internal consistency reliability of the scales, and construct validity of the CHQ-CF administered by either a paper questionnaire or online questionnaire. Given Cohen's suggested guidelines for the interpretation of effect sizes, i.e., 0.20-0.50 indicates a small effect, differences in CHQ-CF scale scores between paper and internet administration can be considered as negligible or small.