Table III. Comparison between cases and controls.
| Variable and Category | Cases | Controls | Total |
|---|---|---|---|
| Mean age (SD) | 50.3 (19.5) | 44.1 (22.6) | 45.4 (22.1) |
| Male sex | 44 (53.7%) | 168 (51.2%) | 212 (51.7%) |
| Diabetes mellitus | 11 (13.4%) | 57 (17.4%) | 68 (19.6%) |
| Varicella | 67 (81.7%) | 273 (83.2%) | 340 (82.9%) |
| Herpes simplex | 32 (39.0%) | 130 (39.6%) | 162 (39.5%) |
| Herpes zoster | 8 (9.8%) | 46 (14.0%) | 54 (13.2.%) |
| Hypertension | 32 (39.0%) | 125 (38.1%) | 157 (38.3%) |
| Pregnancy | 2 (2.4%) | 2 (0.6%) | 4 (1.0%) |
| Anti-flu vaccination | 5 (6.1%) | 16 (4.9%) | 21 (5.1%) |
| Total | 82 (100%) | 328 (100%) | 410 (100%) |