Table 2 Chi-square test for relationship of OS and VSC level and personal perception
From: Prevalence and relevant factors of halitosis in Chinese subjects: a clinical research
|  | N (%) | OS≥2 (%) | P | VSC ≥ 110 (%) | P |
|---|---|---|---|---|---|
Self-reported halitosis | Â | Â | 0.548 | Â | 0.237 |
 Yes | 193(94.1) | 128(66.3) |  | 77(39.9) |  |
 No | 12(5.9) | 7(58.3) |  | 7(58.3) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Informed by others | Â | Â | 0.070 | Â | 1.000 |
 Yes | 180(88.1) | 123(68.3) |  | 74(41.1) |  |
 No | 25(11.9) | 12(48.0) |  | 10(40.0) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Most serious time | Â | Â | 0.121 | Â | 0.217 |
 In the morning | 54(26.3) | 37(68.5) |  | 23(42.6) |  |
 Whole day | 75(36.6) | 55(73.3) |  | 34(45.3) |  |
Pressured | 15(7.3) | 8(53.3) | Â | 2(13.3) | Â |
 Menstrual period | 5(2.4) | 2(40.0) |  | 2(40.0) |  |
 Hunger | 9(4.4) | 8(88.9) |  | 6(66.7) |  |
 After silence | 39(19.0) | 21(53.8) |  | 14(35.9) |  |
 Other time | 8(3.9) | 4(50.0) |  | 3(37.5) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Have you ever been treated for halitosis | Â | Â | 0.545 | Â | 0.304 |
 Yes | 76(37.1) | 48(63.2) |  | 35(46.1) |  |
 No | 129(62.9) | 87(67.4) |  | 49(38) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Halitosis related to oral diseases | Â | Â | 0.793 | Â | 0.916 |
 Yes | 153(74.6) | 101(66.0) |  | 63(41.2) |  |
 No | 4(2.0) | 2(50.0) |  | 2(50.0) |  |
 Do not know | 48(23.4) | 32(66.7) |  | 19(39.6) |  |
 total | 205 | 135(65.9) |  | 84(41.0) |  |
Halitosis related to systemic diseases | Â | Â | 0.272 | Â | 0.362 |
 Yes | 140(68.3) | 88(62.9) |  | 53(37.9) |  |
 No | 13(6.3) | 8(61.5) |  | 7(53.8) |  |
 Do not know | 52(25.4) | 39(75.0) |  | 24(46.2) |  |
 total | 205 | 135(65.9) |  | 84(41.0) |  |
Halitosis related to physical health | Â | Â | 0.157 | Â | 0.566 |
 Yes | 178(86.8) | 113(63.5) |  | 71(39.9) |  |
 No | 3(1.5) | 2(66.7) |  | 2(66.7) |  |
 Do not know | 24(11.7) | 20(83.3) |  | 11(45.8) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Duration (years) | Â | Â | 0.006 | Â | 0.457 |
 < 1 | 43(21.0) | 20(46.5) |  | 16(37.2) |  |
 1–3 | 48(23.4) | 29(60.4) |  | 18(37.5) |  |
 > 3 | 67(32.7) | 51(76.1) |  | 26(38.8) |  |
 Do not know | 47(22.9) | 35(74.5) |  | 24(51.1) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |
Social impacts of halitosis | Â | Â | 0.130 | Â | 0.357 |
 Great seriously affected | 145(70.7) | 98(67.6) |  | 55(37.9) |  |
 Moderate affected | 34(16.6) | 17(50.0) |  | 17(50.0) |  |
 A little affected | 25(12.2) | 19(76.0) |  | 11(44.0) |  |
 No affected | 1(0.5) | 1(100.0) |  | 1(100.0) |  |
 Total | 205 | 135(65.9) |  | 84(41.0) |  |