Table 3 Incidence of herpes zoster by age, sex and comorbidities, and Cox model measured hazards ratio for patients with chondromalacia of patella
From: Chondromalacia patella increases the risk of herpes zoster: a population-based study
Variables | Chondromalacia of patella No Yes | Crude HR* | Multivariate HR& | |||||
|---|---|---|---|---|---|---|---|---|
Event | PY | Rate # | Event | PY | Rate # | (95% CI) | (95% CI) | |
Age | ||||||||
≤ 49 | 2595 | 513934.4 | 5.05 | 654 | 130273.8 | 5.02 | 0.99 (0.91–1.08) | 0.98 (0.90–1.06) |
50–64 | 1901 | 149089.8 | 12.75 | 541 | 37952.7 | 14.25 | 1.12 (1.02–1.23)* | 1.10 (1.00-1.21)* |
65+ | 769 | 53227.6 | 14.45 | 253 | 14094.5 | 17.95 | 1.24 (1.08–1.43)** | 1.22 (1.06–1.41)** |
Sex | ||||||||
Female | 3693 | 436871.9 | 8.45 | 970 | 111487.5 | 8.70 | 1.20 (1.08–1.33)*** | 1.18 (1.07–1.31)** |
Male | 1572 | 279380.0 | 5.63 | 478 | 70833.6 | 6.75 | 1.03 (0.96–1.10) | 1.01 (0.94–1.08) |
Comorbidity§ | ||||||||
No | 3950 | 613587.1 | 6.44 | 1016 | 149318.1 | 6.80 | 1.06 (0.99–1.13) | 1.06 (0.99–1.14) |
Yes | 1315 | 102664.7 | 12.81 | 432 | 33002.9 | 13.09 | 1.02 (0.91–1.14) | 1.05 (0.94–1.17) |