From: Prevalence and relevant factors of halitosis in Chinese subjects: a clinical research
 | N (%) | OS≥2 (%) | P | VSC ≥ 110 (%) | P |
---|---|---|---|---|---|
Dental caries | Â | Â | 0.364 | Â | 1.000 |
 Yes | 42(20.5) | 25(59.5) |  | 17(40.5) |  |
 No | 163(79.5) | 110(67.5) |  | 67(41.1) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Residual crowns/roots | Â | Â | 0.101 | Â | 0.045 |
 Yes | 23(11.2) | 19(82.6) |  | 14(60.9) |  |
 No | 182(88.8) | 116(63.7) |  | 70(38.5) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
CPI score |  |  | < 0.001 |  | 0.426 |
 0 | 9(4.4) | 3(33.3) |  | 2(22.2) |  |
 1 | 48(23.4) | 21(43.8) |  | 16(33.3) |  |
 2 | 129(62.9) | 95(73.6) |  | 56(43.4) |  |
 3 | 17(8.3) | 15(88.2) |  | 9(52.9) |  |
 4 | 2(1.0) | 1(50.0) |  | 1(50.0) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Thickness of tongue coating |  |  | < 0.001 |  | 0.010 |
 0 | 18(8.8) | 8(44.4) |  | 6(33.3) |  |
 1 | 78(38.0) | 41(52.6) |  | 22(28.2) |  |
 2 | 53(25.9) | 41(77.4) |  | 25(47.2) |  |
 3 | 56(27.3) | 45(80.4) |  | 31(55.4) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Area of tongue coating | Â | Â | 0.002 | Â | 0.044 |
 0 | 17(8.3) | 7(41.2) |  | 5(29.4) |  |
 1 | 58(28.3) | 30(51.7) |  | 21(36.2) |  |
 2 | 69(33.7) | 51(73.9) |  | 24(34.8) |  |
 3 | 61(29.8) | 47(77.0) |  | 34(55.7) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Restorations | Â | Â | 0.051 | Â | 0.373 |
 No | 183(89.3) | 125(68.3) |  | 76(41.5) |  |
 Fixed denture | 21(10.2) | 9(42.9) |  | 7(33.3) |  |
 Movable denture | 1(0.5) | 1(100.0) |  | 1(100.0) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |