Characteristics | Unadjusted OR (95% CI) | P-value | Adjusted OR (95% CI) | P-value |
Age (Ref: ≥32 years old) | 1.018 (0.357 - 1.679) | 0.003 | 3.733 (1.741 - 8.004) | 0.001 |
Female gender (Ref: Males) | 2.800 (1.001 - 7.832) | 0.050 | 3.200 (0.975 - 10.500) | 0.055 |
Hours wearing N95 mask (Ref: <4 hours) | 0.999 (0.498 - 2.004) | 0.997 | 1.150 (0.508 - 2.605) | 0.737 |
Pre-existing headache (Ref: Negative) | 3.783 (1.558 - 9.185) | 0.003 | 7.775 (2.381 - 25.396) | 0.001 |