The Dutch Version of the Orthognathic Quality of Life Questionnaire (OQLQ-NL): Validation for Cleft Patients.

OBJECTIVE: The aim of this study is to validate the Dutch version of the Orthognathic Quality of Life Questionnaire (OQLQ-NL) for cleft patients who received orthognathic surgery. METHODS: To compare the OQLQ-NL with the CLEFT-Q, we used a convenience sample of thirty-two cleft patients. Using the Cronbach's alpha coefficient for multiple item scales, internal reliabilities of the OQLQ-NL were evaluated. The OQLQ-NL was repeated at a two-week interval and the intraclass correlation coefficient was calculated, to establish of the test-retest reliability. The construct validity of the OQLQ-NL was evaluated by using Spearman's correlation to test its correlation with the CLEFT-Q. RESULTS: Thirty-two patients filled in the OQLQ-NL and CLEFT-Q. The OQLQ-NL had excellent results in internal reliability and test-retest reliability. The vast majority of the correlations between the domains and scales of the questionnaires were as expected. Data from this study and previous studies confirm the construct validity of the OQLQ-NL. CONCLUSION: Our results suggest the OQLQ-NL is a valid and reliable instrument for measuring quality of life in cleft patients who have received orthognathic surgery in the Netherlands.

Quality of Life After Orthognathic Surgery in Patients with Cleft: An Overview of Available Patient-Reported Outcome Measures.

Measuring the impact of orthognathic surgery on quality of life is of significant importance in patients with cleft deformities. Standardized tools such as patient-reported outcome measures (PROMs) are needed to fully comprehend patients' needs and perceptions. Therefore, the availability of reliable, valid, and comprehensive questionnaires for patients is essential. The aim of this study is to identify PROMs measuring the impact of orthognathic surgery on quality of life in patients with cleft deformities and to evaluate the identified PROMs.A systematic search of the literature was performed according to the preferred reporting items for systematic reviews and meta-analysis guidelines. All validated PROMs, regarding the impact of orthognathic surgery on quality of life in patients with cleft deformities, were identified and assessed according to the quality criteria proposed for measurement properties of health status questionnaires.An electronic search yielded 577 articles. After a full-text review of 87 articles, 4 articles met the inclusion criteria, comprising 58 PROMs. Of these 58 PROMs, 1 PROM (the CLEFT-Q) has been validated to measure the impact of orthognathic surgery on patients with a facial cleft. Evaluation of methodological quality of the included articles and assessment of the measurement properties of the CLEFT-Q show that the CLEFT-Q scores relatively good for all available measurement properties, making it suitable for immediate use.The CLEFT-Q was found to be the only valid instrument so far to measure the impact of orthognathic surgery on the quality of life in patients with cleft deformities.

The Orthognathic Quality of Life Questionnaire: Translation and Validation into Dutch.

OBJECTIVE: The aim of this study is to translate and validate the Orthognathic Quality of Life Questionnaire (OQLQ) in the Dutch language (OQLQ-NL). METHODS: The translation of the OQLQ into the Dutch language was performed following the guidelines for the Process of Cross-Cultural Adaption of Self-Report Measures. Sixty-two patients who received orthognathic surgery in the past 10 years were included for participation. Internal reliabilities of the OQLQ-NL were evaluated for multiple item scales with the use of the Cronbach alpha coefficient. For the establishment of the test-retest reliability, the OQLQ-NL was repeated with a 2-week interval and the intraclass correlation coefficient was calculated. Spearman correlation was used to test the correlation with the OHIP-49NL and the FACE-Q, to be able to evaluate the construct validity of the OQLQ-NL. RESULTS: Thirty-five patients filled in the OQLQ-NL, OHIP49NL, and FACE-Q upon arrival and 22 patients returned the OQLQ-NL after 2 weeks (response rate of 56.6% and 62.9%, respectively). The OQLQ-NL showed excellent results in internal reliability and test-retest reliability. The vast majority of the correlations between the domains of the questionnaires were as expected. Data from this study and previous studies confirm the construct validity of the OQLQ-NL. CONCLUSION: The OQLQ-NL appears to be a valid and reliable instrument to measure quality of life for patients receiving orthognathic surgery in the Netherlands.