Table 2.
Betel quid chewers | ||||||
Former chewers (N = 251) | Current chewers (N = 3040) | ORb (95% CI) | aORc (95% CI) | |||
N | (%)a | N | (%)a | |||
Gender | ||||||
Male | 167 | (8.2) | 1866 | (91.8) | 1.25(0.95–1.64) | - |
Female | 84 | (6.7) | 1174 | (93.3) | 1.00 | |
Age (yrs)* | ||||||
>=45 | 157 | (9.9) | 1425 | (90.1) | 1.89(1.45–2.47) † | 1.84(1.40–2.42) † |
<45 | 94 | (5.5) | 1615 | (94.5) | 1.00 | 1.00 |
Obesity | ||||||
Yes | 58 | (7.3) | 742 | (92.8) | 0.93(0.69–1.26) | - |
No | 193 | (7.8) | 2298 | (92.3) | 1.00 | |
Education (years) | ||||||
<=6 | 137 | (8.0) | 1572 | (92.0) | 1.12(0.87–1.45) | - |
>6 | 114 | (7.2) | 1468 | (92.8) | 1.00 | |
Age commenced chewing (years) | ||||||
>=20 | 166 | (8.0) | 1923 | (92.1) | 1.13(0.87–1.49) | - |
<20 | 85 | (7.1) | 1117 | (92.9) | 1.00 | |
Quids per day* | ||||||
<=10 | 134 | (8.8) | 1397 | (91.3) | 1.34(1.04–1.74) † | 1.24(0.95–1.62) |
>10 | 117 | (6.7) | 1643 | (93.4) | 1.00 | 1.00 |
Marital status | ||||||
Married | 213 | (8.0) | 2448 | (92.0) | 1.33(0.93–1.91) | - |
Single | 37 | (6.2) | 565 | (93.9) | 1.00 | |
Ethnicity* | ||||||
Taiwan aborigines | 218 | (7.2) | 2800 | (92.8) | 0.36(0.21–0.60) † | 0.40(0.24–0.68) † |
Mixed-Taiwan aborigines | 9 | (7.0) | 119 | (93.0) | 0.35(0.15–0.80) † | 0.47(0.20–1.11) |
Non-Taiwan aborigines | 19 | (17.9) | 87 | (82.1) | 1.00 | 1.00 |
Alcohol consumption* | ||||||
No | 91 | (12.5) | 640 | (87.6) | 2.10(1.60–2.76) † | 1.89(1.43–2.50) † |
Yes | 157 | (6.3) | 2323 | (93.7) | 1.00 | 1.00 |
Cigarette smoking | ||||||
No | 97 | (7.1) | 1266 | (92.9) | 0.89(0.68–1.16) | - |
Yes | 145 | (8.0) | 1676 | (92.0) | 1.00 |
* Significant difference in the prevalence of former and current chewers by Chi-square analysis (p < 0.05)
† Significant difference by logistic regression model (P < 0.05).
a May not total 100% due to rounding.
b Odds ratios (OR) refer to the risk of former chewers versus current chewers according to each variable. OR > 1 indicates a higher likelihood of being a former chewer (quit chewing).
c aOR: adjusted odds ratio for age (years), quids per day, ethnicity and alcohol consumption by logistic regression model; 95% CI: 95% confidence interval.