Forward-backward translation, content validity, face validity, construct validity, criterion validity, test-retest reliability, and internal consistency of a questionnaire on patient acceptance of orthodontic retainer
2025

Validating a Questionnaire on Orthodontic Retainer Acceptance

Sample size: 107 publication Evidence: high

Author Information

Author(s): Saw Zhi Kuan, Yuen Jonathan Jun Xian, Ashari Asma, Ibrahim Bahemia Fatima, Low Yun Xuan, Nik Mustapha Nik Mukhriz, Lau May Nak

Primary Institution: Department of Family Oral Health, Faculty of Dentistry, Universiti Kebangsaan Malaysia (UKM), Kuala Lumpur, Malaysia

Hypothesis

This study aimed to assess the validity and reliability of a questionnaire on patient acceptance of orthodontic retainers.

Conclusion

The questionnaire on patient acceptance of orthodontic retainers has been validated and can be used in both clinical and research settings.

Supporting Evidence

  • The questionnaire was validated through multiple tests including content, face, construct, and criterion validity.
  • Moderate to excellent test-retest reliability was demonstrated with ICC values ranging from 0.687 to 0.913.
  • Cronbach’s alpha ranged from 0.687 to 0.913, indicating good internal consistency.
  • Nine orthodontists assessed content validity, ensuring the questionnaire's relevance and clarity.
  • Face validity was established through interviews with 35 participants currently wearing orthodontic retainers.
  • Exploratory Factor Analysis revealed a single component explaining 49.76% of the variance.
  • The study included a diverse sample of participants in terms of gender and ethnicity.
  • The questionnaire can help improve patient compliance with retainer use.

Takeaway

The study created a questionnaire to help understand how patients feel about their orthodontic retainers, making it easier for doctors to help them.

Methodology

The study used a cross-sectional design with various validity and reliability tests, including content, face, construct, and criterion validity.

Limitations

Participants were drawn from a single university clinic, which may not represent the broader Malaysian population.

Participant Demographics

{"gender":{"male":8,"female":27},"ethnicity":{"Malay":12,"Indian":2,"Chinese":20,"Others":1},"age":{"mean":23.03,"standard_deviation":3.74}}

Statistical Information

P-Value

0.490

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pone.0314853

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