Variables | OR | SE | Wald χ2 | P | 95% CI of OR |
---|---|---|---|---|---|
Age (years) | |||||
 < 18 | ref |  |  |  |  |
 18–45 | 1.21 | 0.18 | 1.64 | 0.200 | 0.91–1.61 |
 > 45 | 1.54 | 0.23 | 8.01 | 0.005 | 1.14–2.07 |
Gender | |||||
 Female | ref |  |  |  |  |
 Male | 0.87 | 0.04 | 7.62 | 0.006 | 0.79–0.96 |
Educational attainment | |||||
 High school or below | ref |  |  |  |  |
 College | 1.37 | 0.07 | 33.87 |  < 0.001 | 1.23–1.53 |
 Postgraduate | 1.73 | 0.18 | 26.63 |  < 0.001 | 1.41–2.13 |
Oral health practice score | 0.91 | 0.01 | 132.02 |  < 0.001 | 0.90–0.93 |
Frequency of eating citrus fruits | 0.99 | 0.03 | 0.05 | 0.821 | 0.93–1.06 |
Frequency of drinking fruit juice | 0.98 | 0.04 | 0.28 | 0.599 | 0.90–1.06 |
Frequency of drinking tea | 0.95 | 0.02 | 4.28 | 0.038 | 0.91–1.00 |
Frequency of alcohol use | 0.96 | 0.03 | 1.56 | 0.210 | 0.90–1.02 |
Frequency of eating hard foods | 1.10 | 0.04 | 5.76 | 0.016 | 1.02–1.19 |
Frequency of eating super-hard foods | 0.96 | 0.05 | 0.62 | 0.428 | 0.87–1.06 |
Frequency of using teeth to bite crab shells or open beer caps | 1.03 | 0.04 | 0.64 | 0.421 | 0.96–1.10 |