Table 4. Estimates of sensitivity, specificity, positive predictive value and negative predictive value for clinically determined and self-reported dental caries (DMFT ≥1) according to gender, adolescent's schooling, household income and visit to dentist in previous year in 1993 birth cohort at 18 years of age, Pelotas, Rio Grande do Sul, Brazil, 2012.
| Sensitivity % (95% CI) | Specificity % (95% CI) | PPV1 % (95% CI) | NPV2 % (95% CI) | Accuracy | |
| Female | 87.3 (83.2; 90.7) | 70.7(62.7; 77.8) | 86.8 (82.7; 90.2) | 71.6 (63.6; 78.7) | 82.1 |
| Male | 76.4 (71.5; 80.9) | 84.1 (78.1; 89.0) | 89.5 (85.4; 92.8) | 66.8 (60.4; 72.8) | 78.2 |
| Lesser schooling of adolescent (≤4 years of study) | 75.0 (56.8; 88.5) | 65.0 (40.8; 84.6) | 77.4 (58.9; 90.4) | 61.9 (38.4; 81.9) | 71.1 |
| Greater schooling of adolescent (≥12 years of study) | 82.6 (61.2; 95.0) | 92.6 (75.7; 99.1) | 90.5 (69.6; 98.8) | 86.2 (68.2; 96.1) | 88.0 |
| Lower household income (1st tertile) | 84.5 (79.8; 88.5) | 75.4 (67.2; 82.4) | 87.9 (83.4; 91.5) | 69.7 (61.5; 77.0) | 83.9 |
| Higher household income (3rd tertile) | 78.0 (71.3; 83.8) | 83.5 (74.9; 90.1) | 89.3 (83.4; 93.6) | 68.3 (59.4; 76.3) | 80.0 |
| Visited dentist in previous year | 81.9 (77.6; 85.6) | 78.0 (70.7; 84.2) | 89.8 (86.1; 92.8) | 64.6 (57.4; 71.3) | 80.7 |
| Did not visit dentist in previous year | 80.8 (75.9; 86.0) | 78.2 (71.4; 84.0) | 85.9 (81.3; 89.8) | 72.5 (65.7; 78.7) | 80.4 |
1
positive predictive value.
2
negative predictive value.