Table 1.
Characteristics and Results According to Practice
| Practice |
Total | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
| Number | 200 | 201 | 200 | 116 | 187 | 200 | 201 | 200 | 199 | 195 | 1,899 |
| Age, mean (SD), y | 48.6 (15.2) | 48.2 (17.3) | 49.2 (17.3) | 58.2 (14.6) | 47.8 (16.1) | 39.6 (14.8) | 51.7 (16.0) | 48.6 (16.4) | 50.9 (16.8) | 52.3 (16.8) | 49.2a (16.7) |
| Sex, female, % | 50.5 | 51.3 | 51.8 | 41.4 | 55.2 | 55.0 | 56.0 | 58.8 | 54.6 | 58.5 | 53.3a |
| No. of pregnant patients | 2 | 3 | 0 | 1 | 1 | 2 | 0 | 2 | 0 | 6 | 17 |
| No. (%) of smokers | 33 (16) | 29 (14) | 38 (19) | 8 (7) | 41 (22) | 64 (32) | 36 (18) | 38 (19) | NR | NR | 287 (19) |
| No. (%) of patients with dentures | 19 (9) | 14 (7) | 29 (15) | 23 (19) | 34 (18) | 21 (11) | 43 (21) | 24 (12) | NR | NR | 207 (14) |
| Kappa values of H-T and GDP calibration | 0.50 | 0.85 | 0.76 | 0.81 | 0.74 | 0.72 | 0.82 | 0.79 | 0.39 | 0.69 | 0.71a |
| No. (%) of patients within each band of restorations and crowns | |||||||||||
| 0 | 7 (4) | 11 (5) | 22 (11) | 1 (1) | 3 (2) | 23 (12) | 10 (5) | 9 (5) | 20 (10) | 5 (3) | 111 (6) |
| 1 to 9 | 107 (54) | 116 (58) | 114 (57) | 56 (48) | 107 (57) | 122 (61) | 114 (57) | 120 (60) | 94 (47) | 92 (46) | 1,042 (55) |
| 10+ | 86 (43) | 74 (37) | 64 (32) | 59 (51) | 77 (41) | 55 (28) | 77 (39) | 71 (35) | 84 (43) | 98 (49) | 745 (39) |
| Mean time taken by practitioner for screening, min:s | |||||||||||
| H-T | 3:39 | 3:36 | 4:52 | 4:14 | 7:12 | 3:15 | 3:39 | 8:07 | 12:01 | 3:31 | 5:25a |
| GDP | 3:10 | 2:30 | 4:43 | 3:45 | 8:26 | 3:14 | 3:55 | 9:22 | 2:06 | 3:16 | 4:27a |
| Caries results | |||||||||||
| Positive predictive value (95% CI) | 0.91 | 0.65 | 0.69 | 0.34 | 0.80 | 0.90 | 0.92 | 0.73 | 0.57 | 0.66 | 0.75 (0.72 to 0.80) |
| Negative predictive value (95% CI) | 0.91 | 0.97 | 0.96 | 0.89 | 0.80 | 0.88 | 0.76 | 0.96 | 0.89 | 0.82 | 0.90 (0.88 to 0.91) |
| Positive likelihood ratio (95% CI) | 27.04 | 8.36 | 7.0 | 2.53 | 4.44 | 4.75 | 9.89 | 20.52 | 3.22 | 9.10 | 6.14 (3.68 to 10.26) |
| Negative likelihood ratio (95% CI) | 0.27 | 0.16 | 0.14 | 0.62 | 0.27 | 0.08 | 0.27 | 0.32 | 0.30 | 1.80 | 0.29 (0.15 to 0.30) |
| Diagnostic odds ratio (95% CI) | 101.43 | 53.98 | 49.00 | 4.05 | 16.47 | 61.58 | 36.88 | 65.14 | 10.89 | .20 | 28.10 (15.5 to 50.95) |
| Periodontal disease results | |||||||||||
| Positive predictive value (95% CI) | 0.84 | 0.84 | 0.93 | 0.81 | 0.88 | 0.83 | 0.86 | 0.93 | 0.59 | 0.66 | 0.82 (0.80 to 0.84) |
| Negative predictive value (95% CI) | 0.88 | 0.91 | 0.89 | 0.74 | 0.61 | 0.91 | 0.82 | 0.73 | 0.82 | 0.84 | 0.84 (0.81 to 0.86) |
| Positive likelihood ratio (95% CI) | 7.48 | 6.68 | 7.90 | 1.67 | 2.60 | 4.30 | 2.76 | 5.54 | 2.12 | 2.42 | 3.63 (2.58 to 5.12) |
| Negative likelihood ratio (95% CI) | 0.19 | 0.13 | 0.07 | 0.14 | 0.23 | 0.08 | 0.10 | 0.15 | 0.32 | 0.23 | 0.15 (0.11 to 0.19) |
| Diagnostic odds ratio (95% CI) | 39.43 | 50.96 | 107.94 | 12.30 | 11.49 | 51.94 | 28.20 | 37.04 | 6.58 | 10.49 | 24.99 (14.59 to 42.82) |
CI, confidence interval; DCP, ; GDP, general dental practitioner; H-T, hygiene-therapist; NR, not recorded by dental practice; SD, standard deviation.
a
Mean values.