Table 2.
Relative ratio (RR) of lichen planus from 1996 to 2013 by multivariate Poisson regression.
| RRa | 95% C.I. |
p value | ||
|---|---|---|---|---|
| Lower | Upper | |||
| Year (per 1 year) | 1.08 | 1.07 | 1.08 | <0.001 |
| Age (ref: <65) | ||||
| ≧65 | 3.83 | 3.73 | 3.94 | <0.001 |
| Gender (ref: Male) | ||||
| Female | 2.13 | 2.07 | 2.18 | <0.001 |
| Urbanization (ref: Urban) | ||||
| Suburban | 0.80 | 0.78 | 0.82 | <0.001 |
| Rural | 1.02 | 0.97 | 1.06 | 0.442 |
| Payroll bracket (ref: ≦NT $21900) | ||||
| NT $21901∼$43900 | 1.80 | 1.75 | 1.86 | <0.001 |
| >NT $43900 | 2.27 | 2.17 | 2.36 | <0.001 |
a
Adjusted for year, age, gender, urbanization and payroll bracket.