Abstract
This study tests the psychometric properties of the Adherence to Weight Control Questionnaire, a new screening tool to measure treatment adherence (TAWC) and the risk of nonadherence to weight control (RNAWC) in adolescents. Participants are 92 adolescents (12-18 years old) from a pediatric obesity clinic. Construct validity were evaluated using a principal axis factoring method with varimax rotation. Reliability and criterion-related validity of both scales were also checked. Both scales presented good reliability values (.770 and .908). Statistical analyses yielded a 1-factor solution for the RNAWC and a 4-factor solution for the TAWC. Criterion-related validity of scales was also checked. Results showed that this theory-driven measure of adherence to weight control has adequate psychometric properties to support both research and the clinical practice.
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