Unadjusted occurrence of infections among cases of GCA and controls
| Cases N=4559 | Controls N=22 795 | p Value | |
| Any prior herpes zoster infection | |||
| Percentage | 9% | 7% | <0.01 |
| Time from zoster to GCA, years | 6 (3, 10) | 6 (3, 10) | 0.99 |
| Prior herpes zoster infection+ antiviral prescription | |||
| Percentage | 5% | 4% | 0.05 |
| Time from zoster to GCA, years | 5 (2, 8) | 5 (2, 9) | 0.93 |
| Antiviral prescription among those who had zoster | 53% | 56% | 0.34 |
| Any prior infection | 68% | 61% | <0.01 |
| Respiratory infection | 58% | 51% | <0.01 |
| Urinary tract infection | 19% | 15% | <0.01 |
| Gastrointestinal infection | 6% | 4% | <0.01 |
| Skin or soft tissue infection | 17% | 14% | <0.01 |
| Conjunctivitis | 16% | 12% | <0.01 |
Data expressed as median (IQR) or percentage.
GCA, giant cell arteritis.