Table 1.
Convergence validity.
| OHIP-Sp domains and OHIP-Sp score | Self perceived oral health status | ||||
| All students (9,133) | Good (n = 2,217) | Fair (n = 5,964) | Poor (n = 950) | rs | |
| mean [95% CI] | Mean [95% CI] | mean [95% CI] | mean [95% CI] | ||
| Functional limitation | 2.1 [2.0;2.1] | 1.1 [1.1;1.2] | 2.1 [2.1;2.2] | 3.8 [3.7;3.9] | 0.42# |
| Physical pain | 3.0 [3.0;3.1] | 2.2 [2.1;2.3] | 3.1 [3.0;3.1] | 4.4 [4.3;4.6] | 0.27# |
| Psychological discomfort | 1.9 [1.9;1.9] | 1.5 [1.4;1.5] | 1.9 [1.9;2.0] | 2.7 [2.6;2.8] | 0.26# |
| Physical disability | 0.9 [0.9;0.9] | 0.5 [0.5;0.6] | 0.9 [0.9;0.9] | 1.9 [1.8;2.0] | 0.28# |
| Psychological disability | 1.1 [1.1;1.1] | 0.4 [0.4;0.5] | 1.1 [1.1;1.1] | 2.6 [2.4;2.7] | 0.35# |
| Social disability | 0.3 [0.3;0.3] | 0.1 [0.1;0.1] | 0.3 [0.3;0.3] | 0.9 [0.8;0.9] | 0.23# |
| Handicap | 0.4 [0.4;0.4] | 0.2 [0.1;0.2] | 0.4 [0.4;0.4] | 1.0 [1.0;1.1] | 0.24# |
| OHIP-Sp (all items) | 9.7 [9.5;9.8] | 6.1 [5.9;6.3] | 9.8 [9.7;10.0] | 17.2 [16.7;17.8] | 0.41# |
Mean scores and Spearman's rank correlation coefficients between OHIP-Sp and its domains, and self-perceived oral health status. (rs = Spearman's rank correlation coefficients; # = P-value < 0.001; [95% CI] = 95% confidence interval for the mean).