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Table 3 Influenza rates by BIRD analysis and ICD code extraction for select locations

From: Hospital utilization rates for influenza and RSV: a novel approach and critical assessment

Country Age group BIRD rate per 100,000 (95% UI) ICD-coded rate per 100,000 (95% UI)
Ecuador < 1 year 64.5 (6–260.9) 9.8 (9.1–10.6)
Ecuador 1 to 4 56.5 (4.3–210) 5.5 (5.2–5.8)
Ecuador 5 to 17 22.1 (2.2–75.5) 1.5 (1.4–1.6)
Ecuador 18 to 49 12.8 (1.7–39.6) 1.8 (1.7–1.8)
Ecuador 50 to 64 10 (1–39.1) 2.4 (2.2–2.6)
Ecuador 65 plus 10.5 (0.8–42.7) 3.4 (3.1–3.7)
Georgia < 1 year 50.3 (6.5–375.9) 16.2 (9.7–22.7)
Georgia 1 to 4 54 (7.3–385.5) 22.5 (18.8–26.1)
Georgia 5 to 17 46.2 (8–219.6) 6.8 (5.6–8)
Georgia 18 to 49 23.5 (4–87.6) 2.8 (2.4–3.3)
Georgia 50 to 64 19.8 (2.4–107.2) 2.8 (2.1–3.5)
Georgia 65 plus 7.9 (0.9–64.8) 2.8 (2–3.6)
India < 1 year 11.1 (1–46.4) 0.6 (0.6–0.7)
India 1 to 4 14.9 (1.5–59.8) 1.1 (1.1–1.1)
India 5 to 17 10.5 (1.2–35.1) 0.2 (0.2–0.2)
India 18 to 49 16.6 (2–47.7) 3.7 (3.7–3.7)
India 50 to 64 10.2 (1–40.8) 3.8 (3.7–3.8)
India 65 plus 5.9 (0.5–25.4) 3.9 (3.8–3.9)
Mexico < 1 year 98.4 (10.3–458.1) 4.3 (4.1–4.5)
Mexico 1 to 4 87 (9.3–388.3) 7.1 (7–7.2)
Mexico 5 to 17 22.8 (3–74) 1.9 (1.9–2)
Mexico 18 to 49 6.6 (0.9–21.6) 0.8 (0.8–0.8)
Mexico 50 to 64 8.4 (0.9–33.2) 1.5 (1.4–1.5)
Mexico 65 plus 7.3 (0.7–32.7) 1.3 (1.2–1.4)
New Zealand < 1 year 58 (6–231.5) 15.7 (13.3–18.1)
New Zealand 1 to 4 131.6 (13.6–482.9) 46.7 (44.6–48.8)
New Zealand 5 to 17 18.1 (2.7–54) 5.7 (5.3–6.1)
New Zealand 18 to 49 25.4 (3.8–66.7) 5.7 (5.5–6)
New Zealand 50 to 64 13.6 (1.5–50.1) 5.5 (5.1–5.9)
New Zealand 65 plus 11.3 (1–50.2) 10.5 (9.8–11.2)
Philippines < 1 year 104.4 (11.4–394.8) 11.6 (10.7–12.5)
Philippines 1 to 4 288.2 (32.6–1024) 53.7 (52.6–54.7)
Philippines 5 to 17 390.7 (60.8–1007.2) 66.2 (65.5–66.8)
Philippines 18 to 49 110.6 (18.8–267.5) 16.3 (16–16.6)
Philippines 50 to 64 91.4 (10.7–310.1) 14.5 (14–15)
Philippines 65 plus 42.5 (3.9–179.1) 12.3 (11.6–13.1)
Sweden < 1 year 128.5 (11.1–523.3) 25.2 (22.8–27.7)
Sweden 1 to 4 60.1 (6.9–294.4) 22.3 (21.2–23.5)
Sweden 5 to 17 11.6 (1.8–82.7) 4.8 (4.5–5.1)
Sweden 18 to 49 12 (2.1–63.8) 3.5 (3.3–3.6)
Sweden 50 to 64 5.5 (0.7–41.9) 5.9 (5.6–6.2)
Sweden 65 plus 5.8 (0.6–41.7) 16.9 (16.2–17.5)
Turkey < 1 year 50.8 (4.9–205.6) 1.3 (0.8–1.8)
Turkey 1 to 4 284.7 (28–1137) 8.4 (7.8–9)
Turkey 5 to 17 130.3 (16.5–400.1) 2.2 (2.1–2.4)
Turkey 18 to 49 28.9 (4.1–83.5) 2.3 (2.2–2.4)
Turkey 50 to 64 23.2 (2.4–90.7) 2.6 (2.4–2.8)
Turkey 65 plus 15.3 (1.4–68.9) 5.6 (5.2–6.1)
United States of America < 1 year 168.4 (16.2–714.1) 139.5 (138.4–140.7)
United States of America 1 to 4 43.4 (4.4–175.8) 36.1 (35.8–36.4)
United States of America 5 to 17 16.6 (2.3–54.5) 7.2 (7.1–7.3)
United States of America 18 to 49 27.8 (4.1–80.9) 4.8 (4.8–4.8)
United States of America 50 to 64 31.6 (3.4–122.6) 9.6 (9.5–9.6)
United States of America 65 plus 27 (2.5–122.6) 32 (31.8–32.2)
  1. BIRD estimates of rates of influenza admission as compared to the rate from a raw ICD code extraction. BIRD and raw coded rate are produced across all years of available data for each country