Table 5.
Internal reliability for the French COHIP-SF-19 questionnaire (n = 557)
| Since school-year started | Cronbach alpha | Item-rest correlation | Total Cronbach’s alpha if item delated |
|---|---|---|---|
| Domain 1: Oral health | 0.624 | ||
| Q1: Had pain in your teeth/toothache | 0.47 | 0.789 | |
| Q2: Had discoloured teeth or spots on your teeth | 0.403 | 0.792 | |
| Q3: Had crooked teeth, paces between your teeth | 0.369 | 0.794 | |
| Q4: Had bad breath | 0.371 | 0.794 | |
| Q5: Had bleeding gums | 0.291 | 0.8 | |
| Domain 2: Functional well-being | 0.495 | ||
| Q9: Had difficulty eating foods I would like to eat | 0.448 | 0.789 | |
| Q12: Had trouble sleeping | 0.52 | 0.786 | |
| Q15: Had difficulty saying certain words | 0.374 | 0.794 | |
| Q19: Had difficulty keeping your teeth clean | 0.299 | 0.799 | |
| Domain 3: Socio-emotional well-being | 0.703 | ||
| Q6: Been unhappy or sad | 0.532 | 0.784 | |
| Q10: Felt worried or anxious | 0.504 | 0.786 | |
| Q11: Avoided smiling, laughing with other children | 0.556 | 0.783 | |
| Q16: Felt that you look different | 0.502 | 0.788 | |
| Q18: Been worried about what other people think | 0.412 | 0.791 | |
| Q14: Teased, bullied, called names by other children | 0.495 | 0.790 | |
| Q7: Missed school | 0.423 | 0.792 | |
| Q13: Did not want to speak/read out loud in class | 0.502 | 0.789 | |
| Q8: Been reassured or put in trust through | 0.099 | 0.817 | |
| Q17: Felt that you were good looking | 0.032 | 0.819 | |
| COHIP-SF-19 total score | 0.802 |