Table 2. Age-specific mean annual excess mortality rate associated with influenza in Western Kenya, 2007–2013.
| Cause of death by age | Negative-binomial regression method | Rate-difference method (Higha activity vs. baselineb) |
||
|---|---|---|---|---|
| Estimated deaths | Mortality Rate* (95% CI) | Estimated deaths | Mortality Rate* (95% CI) | |
| All causes | ||||
| <5 years | 8 | 22.2 (0.0–145.2) | 44 | 125.5 (93.4–168.4) |
| 5–49 years | 1 | 0.8 (0.0–40.0) | 37 | 23.6 (17.1–32.5) |
| ≥50 years | 23 | 74.0 (0.0–310.4) | 29 | 95.1 (66.1–136.7) |
| All ages | 32 | 14.1 (0.0–93.3) | 100 | 44.8 (36.8–54.4) |
| Respiratory, including pneumonia | ||||
| <5 years | 6 | 16.7 (0.0–78.2) | 22 | 62.7 (41.3–95.1) |
| 5–49 years | 7 | 4.5 (0.0–7.2) | 4 | 2.2 (0.8–6.3) |
| ≥50 years | 11 | 34.6 (0.0–81.0) | 5 | 17.7 (7.6–41.1) |
| All ages | 24 | 10.5 (0.0–28.5) | 22 | 9.6 (6.3–14.7) |
| HIV/AIDS | ||||
| <5 years | 1 | 3.6 (0.0–27.3) | 14 | 40.9 (24.4–68.6) |
| 5–49 years | NE | NE | 9 | 6.3 (3.4–11.7) |
| ≥50 years | NE | NE | 4 | 13.4 (5.1–35.2) |
| All ages | NE | NE | 25 | 11.3 (7.7–16.7) |
| Pulmonary Tuberculosis (TB) | ||||
| <5 years | 1 | 2.2 (0.0–8.2) | 1 | 2.8 (0.4–20.1) |
| 5–49 years | 10 | 6.5 (0.0–31.6) | 27 | 17.4 (11.9–25.2) |
| ≥50 years | 13 | 41.6 (0.0–122.7) | 13 | 41.8 (24.1–72.3) |
| All ages | 24 | 10.6 (0.0–40.2) | 39 | 17.5 (12.8–23.9) |
aMonthly percentage of influenza positive cases ≥15%;
bMonthly percentage of influenza cases <15%;
*Deaths per 100,000 person-years.
NE-Not estimated