Table:
Selected variables	Categories	P	OR	95%CI
Education	Continuous variable (years)	< 0.001	0.410	0.356-0.473
Gender	Male (Ref.)	---	1.00	---
Female	< 0.001	2.43	1.51-3.89

Transcribe the illustration into Markdown format.

| Selected variables | Categories | P | OR | 95%CI | 
 | --- | --- | --- | --- | --- | 
 | Education | Continuous variable (years) | < 0.001 | 0.410 | 0.356-0.473 | 
 | <ROWSPAN=2> Gender | Male (Ref.) | --- | 1.00 | --- | 
 | Female | < 0.001 | 2.43 | 1.51-3.89 |