Table 3.
Cancer Incidence Rates by World Health Organization Clinical Stage at Time of Cohort Enrollment
| Timing of diagnosis | Incidence Rate | (95% CI) | Incidence Rate Ratio | (95% CI) |
|---|---|---|---|---|
| Kaposi sarcoma | ||||
| Stage 1 or 2 | 145.3 | (109.0–181.6) | 1 | … |
| Stage 3 | 202.8 | (150.3–255.4) | 1.4 | (1.1–1.7) |
| Stage 4 | 150.2 | (106.5–193.9) | 1.0 | (0.8–1.3) |
| Cervical cancer | ||||
| Stage 1 or 2 | 12.6 | (6.0–19.1) | 1 | … |
| Stage 3 | 21.3 | (8.0–34.7) | 1.7 | (0.9–3.2) |
| Stage 4 | 1.0 | (0.0–2.4) | 0.1 | (0.0–0.3) |
Incidence rates are per 100 000 person-years on antiretroviral therapy (ART) and are age-adjusted to the 2007 Malawi standard population. Cancer sites include invasive cases only. Cases with missing World Health Organization stage at enrollment were excluded (Kaposi sarcoma, n = 229; cervical cancer, n = 2).
Abbreviation: CI, confidence interval.