Reliability and validity of measurement instrument for business factors influencing adult patients' selection of orthodontic services

Name: Phunphimp Chanjavanakul

Organization : Mahidol University. Faculty of Dentistry

Name: Peerapong Santiwong

Organization : Mahidol University. Faculty of Dentistry

Name: Kawin Sipiyaruk

Organization : Mahidol University. Faculty of Dentistry

Name: Rochaya Chintavalakorn

Organization : Mahidol University. Faculty of Dentistry

Email : krittika.chi@mahidol.ac.th

keyword: Service Marketing Mix

LCSH: Orthodontics

LCSH: Dentistry, Operative -- Reliability

LCSH: Validity

Abstract: As orthodontic treatment has become more accessible and the healthcare industry has become more patient centered, it is beneficial to know why patients choose to have their orthodontic treatment done at a specific clinic/hospital. This study aims to develop a standardized instrument to identify and measure factors affecting patients’ selection of orthodontic services in adults and assess its validity and reliability. The items in the questionnaire were developed based on previous literature derived from Service Marketing Mix (7Ps) and orthodontic concepts. Three qualified orthodontic and marketing experts reviewed and scored each item, then item-objective congruence (IOC) indices were calculated. The preliminary questionnaire was then piloted in 31 active adult orthodontic patients, and retested again two weeks apart. The data were then analyzed for test-retest reliability. The final questionnaire comprises a total of 35 items, covering 7 factors in accordance with Service Marketing Mix (7Ps) framework with 5 items in each factor. The internal consistency reliability test (Cronbach’s alpha) was performed. For each factor, the Cronbach’s alpha was 0.898, 0.729, 0.717, 0.880, 0.897, 0.816 and 0.802 respectively, which passed the standard for internal consistency reliability test. This questionnaire was designed to measure adult patients with 7-point Likert scale. In conclusion, this study developed a standardized instrument for identifying business-related factors affecting patients’ selection of orthodontic services in adults. This can be utilized in further study for identifying factors affecting patients in orthodontic service selection in different settings.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2023

Modified: 2024-05-01

Issued: 2024-05-01

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application/pdf

BibliograpyCitation : In Rangsit University. The 8th RSU International Research Conference on Sciences and Technology 2023 (RSUCON 2023) (pp.358-364). Pathum Thani : Rangsit University

eng

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