| Covariates |
| 95% CI | Multivariate | |
| n | Estimation | P-value | ||
| Sex |
| |||
| females | 192 | −0.071 | −0.25 - 0.11 | 0.44 |
| males | 191 | |||
| Age |
| |||
| <20 years | 15 | 0.084 | ||
| 20 - 39 years | 114 | −0.05 - 0.22 | 0.24 | |
| ≥40 years | 92 | |||
| Ethnicity group |
| |||
| native | 232 | −0.116 | ||
| non-native | 145 | −0.29 - 0.06 | 0.21 | |
| ND | 6 | |||