Table 3 Prevalence of gingival bleeding and dental calculus
From: Oral health status of students with visual or hearing impairments in Northeast China
School | Variables | N | Number of students with gingival bleeding | % | χ2 | P value | Number of students with dental calculus | % | |
|---|---|---|---|---|---|---|---|---|---|
Visual impairment | Gender | Male | 59 | 36 | 61.02% * | 4.90 | 0.027 | 34 | 57.63% |
Female | 37 | 14 | 37.84% | 23 | 62.16% | ||||
Age (years) | 6–12 | 7 | 1 | 14.29% | 4.32 | 0.038 | 3 | 42.86% | |
13–30 | 89 | 49 | 55.06% | 54 | 60.67% | ||||
Status | Low | 5 | 4 | 80.00% | 5 | 100.00% | |||
Serious | 90 | 46 | 51.11% | 53 | 58.89% | ||||
Total | 96 | 50 | 52.08% | 57 | 59.38% | ||||
Hearing impairment | Gender | Male | 29 | 7 | 24.14% | 15 | 51.72% | ||
Female | 27 | 3 | 11.11% | 9 | 33.33% | ||||
Age (years) | 6–12 | 7 | 1 | 14.29% | 1 | 14.29% | |||
13–30 | 49 | 9 | 18.37% | 23 | 46.94% | ||||
Status | Low | 52 | 9 | 17.31% | 23 | 44.23% | |||
Serious | 4 | 1 | 25.00% | 1 | 25.00% | ||||
Total | 56 | 10 | 17.86% | 24 | 42.86% | ||||