Prevalence of types of periodontitis, presence of untreated caries, mean number of teeth with untreated caries and missing teeth by depressive symptoms among adults aged ≥30 years who completed a periodontal examination and the PHQ-9 depression screening questionnaire in the National Health and Nutrition and Examination Survey
| Severity of depressive symptoms | Periodontitis (2009–2014) (n=9799) | Dental caries and missing teeth (2011–2014) (n=7011) | |||||
| Any periodontitis %* (99% CI) | Mild periodontitis %* (99% CI) | Moderate periodontitis %* (99% CI) | Severe periodontitis %* (99% CI) | Presence of untreated dental caries %* (99% CI) | Mean number of teeth with untreated dental caries N† (99% CI) | Mean number of missing teeth N† (99% CI) | |
| Overall population | 42.1 (38.3 to 46.0) | 4.4 (3.4 to 5.3) | 30.0 (26.8 to 33.1) | 7.8 (6.4 to 9.2) | 21.5 (18.5 to 24.5) | 0.6 (0.5 to 0.8) | 4.9 (4.2 to 5.6) |
| No depressive symptoms | 41.2 (37.3 to 45.1) | 4.2 (3.3 to 5.2) | 29.4 (26.3 to 32.6) | 7.6 (6.2 to 9.0) | 19.4 (16.2 to 22.6) | 0.6 (0.4 to 0.7) | 4.3 (3.6 to 5.0) |
| Mild depressive symptoms | 43.9 (37.1 to 50.1) | 4.1 (2.5 to 5.7) | 31.0 (25.2 to 36.7) | 8.8 (6.0 to 11.6) | 25.7 (21.2 to 30.1) | 0.7 (0.5 to 0.8) | 6.4 (5.1 to 7.6) |
| Moderate depressive symptoms | 52.4 (44.9 to 60.0) | 6.7 (2.6 to 10.9) | 36.4 (30.1 to 42.7) | 9.3 (4.1 to 14.6) | 36.3 (26.1 to 46.5) | 1.1 (0.7 to 1.5) | 8.1 (6.2 to 10.1) |
| Severe depressive symptoms | 42.5 (30.7 to 54.4) | 6.5 (2.0 to 10.9) | 30.0 (20.1 to 39.8) | 6.1 (3.0 to 9.2) | 31.6 (24.6 to 38.5) | 1.0 (0.6 to 1.3) | 8.0 (5.6 to 10.3) |
*Weighted percentages.
†Weighted mean.
PHQ-9, Patient Health Questionnaire-9.