Table 3 Internal consistency for OHIP-Sp and its 7 domains
From: Spanish version of the Oral Health Impact Profile (OHIP-Sp)
Dimensions | Cronbach's α | One-sided 95% confidence interval for α | Average inter-item correlation |
|---|---|---|---|
Functional limitation | 0.58 | 0.57 | 0.13 |
Physical pain | 0.67 | 0.66 | 0.19 |
Psychological discomfort | 0.48 | 0.47 | 0.16 |
Physical disability | 0.63 | 0.62 | 0.16 |
Psychological disability | 0.76 | 0.75 | 0.34 |
Social disability | 0.68 | 0.67 | 0.30 |
Handicap | 0.65 | 0.64 | 0.24 |
OHIP-Sp total score | 0.90 | 0.90 | 0.16 |