Table 1 Incidence rates of LRTIs per 100 child-years and IRRs for severe LRTI compared to non-severe LRTI in Biliran, Philippines, from March 2014 to June 2016
|  | 0–5 months | 6–11 months | First year of life (0–11 months) | Second year of life (12–23 months) | Total | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LRTI classification | n | IR [95% CI] | IRR [95% CI] | n | IR [95% CI] | IRR [95% CI] | n | IR [95% CI] | IRR [95% CI] | n | IR [95% CI] | IRR [95% CI] | n | IR [95% CI] | IRR [95% CI] |
Non-severe | 77 | 44.0 [34.7–54.9] | 1 | 63 | 43.2 [33.2–55.3] | 1 | 140 | 43.6 [36.7–51.5] | 1 | 93 | 61.1 [49.3–74.9] | 1 | 233 | 49.3 [43.1–56.0] | 1 |
Severe | 45 | 25.7 [18.7–34.4] | 0.58 [0.40–0.86] | 36 | 24.7 [17.3–34.2] | 0.57 [0.37–0.87] | 81 | 25.2 [20.0–31.4] | 0.58 [0.43–0.77] | 26 | 17.1 [11.2–25.0] | 0.28 [0.17–0.44] | 107 | 22.6 [18.5–27.3] | 0.46 [0.36–0.58] |
Undefined | 2 | – | – | 4 | – | – | 6 | – | – | 4 | – | – | 10 | – | – |
Total | 124 | 70.8 [58.9–84.4] | – | 103 | 70.7 [57.7–85.7] | – | 227 | 70.7 [61.8–80.6] | – | 123 | 80.8 [67.2–96.5] | – | 350 | 74.0 [66.4–82.2] | – |