Table 4.
Brain Injury | With | Without | Ratio | Adjusted HR | 95%CI | 95%CI | p | ||||
---|---|---|---|---|---|---|---|---|---|---|---|
Subgroup of Events | Event | PYs | Rate (per 105 PYs) |
Event | PYs | Rate (per 105 PYs) |
|||||
Total | 487 | 671,019.80 | 72.58 | 788 | 2089,637.43 | 37.71 | 1.925 | 2.742 | 2.380 | 3.160 | <0.001 |
Acquired stenosis of external ear canal | 166 | 671,019.80 | 24.74 | 189 | 2089,637.43 | 9.04 | 2.735 | 3.549 | 2.713 | 4.644 | <0.001 |
Cholesteatoma of middle ear and mastoid | 304 | 671,019.80 | 45.30 | 579 | 2089,637.43 | 27.71 | 1.635 | 1.777 | 1.494 | 2.114 | <0.001 |
Both | 17 | 671,019.80 | 2.53 | 20 | 2089,637.43 | 0.96 | 2.647 | 4.099 | 1.001 | 21.781 | 0.049 |
PYs = Person-years; Ratio = Rate in case ÷ Rate in control; Adjusted HR = Adjusted Hazard ratio: Adjusted for variables listed in Cox sheet; CI = confidence interval.