The reliability and validity of a newly developed spina bifida-specific Transition Readiness Assessment Questionnaire: Transition Readiness Assessment Questionnaire-supplement (TRAQ-SB).

PURPOSE

The purpose of this study is to report preliminary evidence to support a new condition-specific measure of transition readiness that is theoretically grounded in the Stages of Changes framework. The Transition Readiness Assessment Questionnaire-Spina Bifida (TRAQ-SB) supplement is a newly developed tool used to measure independence and skill acquisition related to spina bifida. Similar to the Transition Readiness Assessment Questionnaire (TRAQ), the TRAQ-SB uses a 5-point Likert response set.

METHODS

Working with a multi-disciplinary team with expertise in the care of children with spina bifida, the authors developed twelve items pertaining to main aspects of SB self-management. The items were reviewed and revised through several iterations by the team and patients. The items were then fielded at a spina bifida Specialty Clinic, where 93 consecutive patients 12-25 years of age were approached to participate and 90 were administered the 20-item TRAQ and a 12-item TRAQ-SB questionnaire. A principal component analysis (PCA) was conducted on the twelve items with oblique rotation (promax). Criterion validity was also assessed by examining the correlation of the TRAQ-SB supplement with the TRAQ and with age.

RESULTS

Results of the factor analysis revealed that eleven of the twelve items loaded onto one factor with factor loadings ranging from 0.46 to 0.84. The scale yielded excellent internal reliability with a Cronbach alpha of 0.90. Correlations of the TRAQ-SB supplement scale score with the TRAQ overall scale score demonstrated good criterion validity (r= 0.74, p< 0.01). In addition, it was highly correlated with the TRAQ subscales, varying from 0.68 to 0.74 (all p< 0.01). Lastly, the TRAQ-SB was significantly correlated with age (r= 0.25, p< 0.01).

CONCLUSIONS

Results of our analyses indicated that the TRAQ-SB demonstrated good internal reliability and criterion validity as evidenced by strong correlation with age and the validated TRAQ measure. The TRAQ-SB tool can be useful to incorporate transition readiness assessment and self-management training into routine care for adolescents with spina bifida.