Table 2.
Incidence rates of herpes zoster in cohort of solid organ transplant recipient Veterans from October 1, 1996–2007 (n=1077)1
| Variable | n | Person- years at risk |
Cases | IncidencerRate2 (95% CI) |
|---|---|---|---|---|
| Overall | 1077 | 4044 | 90 | 22.2 (18.1, 27.4) |
| Age | ||||
| <45 | 161 | 784 | 16 | 20.4 (12.5, 33.3) |
| 45 – 55 | 446 | 1815 | 36 | 19.8 (14.3, 27.5) |
| 55+ | 470 | 1445 | 38 | 26.3 (19.1, 36.1) |
| Race | ||||
| White | 741 | 2831 | 55 | 19.4 (14.9, 25.3) |
| African American | 168 | 612 | 23 | 37.6 (25.0, 56.6) |
| Other | 168 | 601 | 12 | 20.0 (11.3, 35.1) |
| Type of transplant | ||||
| Kidney | 500 | 1847 | 45 | 24.4 (18.2, 32.6) |
| Liver | 461 | 1751 | 32 | 18.3 (12.9, 25.8) |
| Heart | 80 | 325 | 13 | 40.0 (23.2, 68.9) |
| Year of transplant | ||||
| 1996–19993 | 261 | 1553 | 45 | 29.0 (21.6, 38.8) |
| 2000–2004 | 439 | 1835 | 35 | 19.1 (13.7, 26.6) |
| 2005–2007 | 377 | 657 | 10 | 15.2 (8.2, 28.3) |
| Year post transplant | ||||
| Year 1 | 1077 | 996 | 28 | 28.1 (19.4, 40.7) |
| Year 2 | 913 | 812 | 14 | 17.2 (10.2, 29.1) |
| Year 3 | 710 | 615 | 14 | 22.8 (13.5, 38.4) |
| Year 4 | 530 | 464 | 15 | 32.3 (19.5, 53.6) |
1
Excludes patients with survival ≤14 days and those with incomplete outpatient data.
2
Per 1,000 patient-years.
3
Patients only after October 1996.
CI, confidence interval.