Table 2.
Negative binomial regression model of Tooth decay (DT) (ICDAS > 3) to compare the associations of dentine caries and the concentrations of salivary and systemic antibodies (N = 1,318)
| Predictor variables of DT | Exp(β) | p-value | 95% CI |
|---|---|---|---|
| Salivary IgA (SIgA) a | 1.282 | 0.001 | (1.103, 1.490) |
| Serum IgA | 0.809 | 0.082 | (0.638, 1.027) |
| Serum IgG | 1.218 | 0.141 | (0.936, 1.584) |
| Serum IgM | 1.122 | 0.150 | (0.959, 1.313) |
| Tooth brushing frequency | 0.663 | < 0.001 | (0.563, 0.780) |
| Tobacco usage | 1.157 | < 0.001 | (1.079, 1.241) |
| Household income | 0.850 | < 0.001 | (0.785, 0.921) |
| Gender b | 0.744 | 0.001 | (0.623, 0.889) |
| BMI | 0.992 | 0.343 | (0.974, 1.009) |
| Snacks c | 1.043 | 0.546 | (0.910, 1.194) |
aSalivary IgA concentration from stimulated saliva samples
bFor Gender: 1 = Male and 2 = Female
cSelf-reported consumption of beverages, candy, or snacks. Higher value indicates more frequent consumption