TABLE 1.

Estimated Number and Relative Proportions (%; 95% CI) of VRHDs by Age Group, 1993–2001

Age Groups199319941995199619971998199920002001
0–4 y575282525592429455103911252817611036
(41.3; 38.4–44.2)(46.1; 43.0–49.2)(41.7; 38.5–45.0)(44.0; 40.9–47.1)(43.0; 39.6–46.5)(39.0; 35.7–42.3)(36.2; 32.5–39.9)(30.4; 27.1–33.6)(27.8; 23.7–31.9)
5–9 y23962875193615012187177612761072621
(17.2; 15.3–19.1)(16.1; 14.4–17.7)(14.4; 12.6–16.3)(15.4; 13.4–17.3)(17.1; 15.2–18.9)(17.7; 15.6–19.8)(18.3; 15.9–20.6)(18.5; 15.6–21.4)(16.7; 12.5–20.8)
10–19 y122913311113713945653553451354
(8.8; 7.7–10.0)(7.4; 6.4–8.5)(8.3; 7.3–9.4)(7.3; 6.0–8.6)(7.4; 6.3–8.4)(6.5; 5.3–7.8)(7.9; 6.3–9.5)(7.8; 6.2–9.4)(9.5; 7.4–11.6)
≥20 y453554414766325641593684262925181718
(32.6; 29.1–36.1)(30.4; 26.9–33.9)(35.6; 31.3–39.8)(33.4; 29.5–37.2)(32.5; 28.5–36.5)(36.8; 32.3–41.2)(37.6; 33.0–42.2)(43.4; 38.6–48.2)(46.1; 40.0–52.2)
  • Weighted N are shown. 95% CI refers to proportion (%) of VRHDs composed by each age group in each year.