Table 4.
Final model of zero-inflated negative binomial analysis of untreated ECC and risk factors.
| Negative Binomial Portion of the Zero-Inflated Negative Binomial Analysis | ||||
|---|---|---|---|---|
| Variables (n = 401) | Incidence Risk Ratio | p-Value # | 95% Confidence Interval | Pairwise Comparison |
| Monthly family income (HK$) | 0.004 | a > c | ||
| * Below 15,000 a | ||||
| 15,001 to 30,000 b | 0.801 | 0.093 | (0.619, 1.037) | |
| Over 30,000 c | 0.589 | 0.005 | (0.408, 0.852) | |
| Zero-Inflated Portion of the Zero-Inflated Negative Binomial Analysis | ||||
| Variables (n = 401) | Odds Ratio | p -Value # | 95% Confidence Interval | Pairwise Comparison |
| Monthly family income (HK$) | 0.011 | c > a | ||
| * Below 15,000 a | ||||
| 15,001 to 30,000 b | 1.770 | 0.123 | (0.857, 3.655) | |
| Over 30,000 c | 3.455 | 0.003 | (1.524, 7.830) | |
| Mother’s education level | 0.007 | |||
| * Secondary school | ||||
| Post-secondary school | 2.211 | (1.238, 3.949) | ||
| Using toothpaste when brushing | 0.044 | |||
| * No | ||||
| Yes | 2.362 | (1.022, 5.463) | ||
# Bold figure: p-value < 0.05; * Reference group.