Table 4.
Rate by yeara |
|||||
---|---|---|---|---|---|
Age group (years) | 1965–1974 | 1975–1984 | 1985–1994 | 1995–2002 | All years |
<30 | 10.3 | 14.6 | 66.2 | 4.3 | 24.8 |
30–39 | 22.5 | 19.6 | 62.1 | 12.4 | 31.8 |
40–49 | 38.2 | 42.5 | 15.9 | 14.2 | 24.8 |
50–59 | 59.3 | 56.1 | 38.9 | 35.4 | 46.0 |
60–69 | 120.4 | 84.4 | 45.8 | 54.8 | 74.1 |
70–79 | 69.8 | 116.2 | 80.2 | 106.1 | 93.8 |
≥80 | 29.1 | 58.3 | 42.0 | 46.8 | 45.2 |
Age-adjusted rate (95% CI)b | 36.8 (30.1–43.5) | 40.2 (33.7–46.7) | 52.7 (46.6–58.9) | 24.7 (19.9–29.6) | 38.7 (35.7–41.7) |
CI, confidence interval.
Utilization rate per 100,000 person-years.
Utilization rate directly age-adjusted to the US population in 2000.