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Table 8 Tests of reproducibility for the adapted English PIDAQ

From: Validation and reliability of the Malaysian English version of the psychosocial impact of dental aesthetics questionnaire for adolescents

  ICCagreement    Paired t-test Bland and Altman
  (95% CI) SEM SDC MDiff (SD) Limits of Agreement
      Lower Upper % Within limits
12–14 years (N = 53)
 Dental Self-Confidence 0.75 (0.57–0.86)* 3.63 10.06 0.25 (5.18) −9.90 10.39 62.3
 Social Impact 0.78 (0.61–0.87)* 4.46 12.36 0.59 (6.31) −11.77 12.94 100.0
 Psychological Impact 0.68 (0.46–0.82)* 3.80 10.53 0.94 (5.37) −9.59 11.47 100.0
 Aesthetic Concern 0.68 (0.45–0.82)* 1.50 4.15 −0.15 (2.12) −4.30 4.00 94.3
15–17 years (N = 46)
 Dental Self-Confidence 0.82 (0.68–0.90)* 3.63 10.06 −0.28 (4.21) −8.53 7.97 63.0
 Social Impact 0.53 (0.15–0.74)* 5.91 16.39 0.48 (8.36) −15.91 16.87 100.0
 Psychological Impact 0.64 (0.34–0.80)* 4.52 12.53 −0.09 (6.39) −12.61 12.44 89.1
 Aesthetic Concern 0.56 (0.19–0.75)* 1.66 4.6 −0.24 (2.35) −4.84 4.37 84.8
12–17 years (N = 99)
 Dental Self-Confidence 0.78 (0.67–0.85)* 3.35 9.28 0.00 (4.74) −9.28 9.28 77.0
 Social Impact 0.68 (0.52–0.78)* 5.16 14.30 0.54 (7.30) −13.76 14.83 94.8
 Psychological Impact 0.67 (0.51–0.78)* 4.14 11.48 0.47 (5.86) −11.02 11.95 100.0
 Aesthetic Concern 0.62 (0.44–0.75)* 1.57 4.34 −0.19 (2.22) −4.54 4.15 92.9
  1. *p < 0.05. CI confidence interval, SEM standard error of measurement, SDC smallest detectable change, M Diff mean differences, SD standard deviation