Table 4 Univariate analysis of caries and periodontal health status among a sample of 12–15 years old in Gansu province of China (Chi-square analysis)
Characteristics | Caries rate | Periodontal health rate | ||||
|---|---|---|---|---|---|---|
Rate % | χ2 value | p value | Rate % | χ2 value | p value | |
Gender | – | 13.26 | < 0.001 | – | 5.48 | 0.019 |
Female | 35.7 | – | – | 28.0 | – | – |
Male | 41.5 | – | – | 31.5 | – | – |
District | – | 147.37 | < 0.001 | – | 9.18 | 0.002 |
Urban | 29.1 | – | – | 27.5 | – | – |
Rural | 48.2 | – | – | 32.0 | – | – |
Age (years) | – | 23.89 | < 0.001 | – | 13.75 | 0.003 |
12 | 33.2 | – | – | 32.8 | – | – |
13 | 36.5 | – | – | 29.5 | – | – |
14 | 42.8 | – | – | 31.3 | – | – |
15 | 41.5 | – | – | 25.5 | – | – |
Only children | – | 10.82 | 0.001 | – | 0.832 | 0.362 |
Yes | 31.0 | – | – | 31.7 | – | – |
No | 39.5 | – | – | 29.5 | – | – |
Frequency of sweets consumption | – | 8.36 | 0.039 | – | 0.53 | 0.912 |
Rarely | 31.0 | – | – | 31.0 | – | – |
1 to 4 times a month | 38.4 | – | – | 29.9 | – | – |
2 to 7 times a week | 40.3 | – | – | 29.2 | – | – |
≥ 2 times a day | 40.4 | – | – | 31.9 | – | – |
The time of recent dental visit | – | 24.70 | < 0.001 | – | 3.09 | 0.378 |
Within 6 months | 51.5 | – | – | 27.5 | – | – |
6 to 12 months | 45.9 | – | – | 34.4 | – | – |
More than 12 months | 42.1 | – | – | 30.0 | – | – |
Never | 36.6 | – | – | 29.4 | – | – |
Toothache experience | – | 95.73 | < 0.001 | – | 2.55 | 0.467 |
Often | 64.5 | – | – | 28.4 | – | – |
Occasionally | 41.7 | – | – | 29.2 | – | – |
Never | 29.2 | – | – | 31.9 | – | – |
Can’t remember | 29.3 | – | – | 29.0 | – | – |
Oral health knowledge | – | 2.99 | 0.394 | – | 18.14 | < 0.001 |
Poor | 44.2 | – | – | 27.3 | – | – |
Average | 36.9 | – | – | 24.5 | – | – |
Good | 38.3 | – | – | 29.7 | – | – |
Excellent | 40.3 | – | – | 34.4 | – | – |