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Table of Weights for Age-adjustment to U.S. 2000 Age Standard

The age-adjusted rate may be considered an average across the age-specific rates, but rather than being a simple average, it is a weighted average with each age-specific rate weighted by the proportion of people in that age group in the U.S. 2000 standard population.

Age-adjusted Weights for U.S. 2000 Standard Population


Age GroupU.S. 2000 Population Projection
(in thousands)
Weight

1

Under 1 Year

3,795

0.013818

2

1 - 4 Years

15,192

0.055317

3

5 - 14 Years

39,977

0.145565

4

15 - 24 Years

38,077

0.138646

5

25 - 34 Years

37,233

0.135573

6

35 - 44 Years

44,659

0.162613

7

45 - 54 Years

37,030

0.134834

8

55 - 64 Years

23,961

0.087247

9

65 - 74 Years

18,136

0.066037

10

75 - 84 Years

12,315

0.044842

11

85 Years and Over

4,259

0.015508



For more information on direct and indirect age adjustment of public health data, please visit the NM-IBIS page on Age-adjusted Rates.


References


1. Anderson RN, Rosenberg HM. Age Standardization of Death Rates: Implementation of the Year 2000 Standard. National vital statistics reports; vol 47 no.3. Hyattsville, Maryland: National Center for Health Statistics. 1998.

2. Klein RJ, Schoenborn CA. Age-Adjustment Using the 2000 Projected U.S. Population. Statistical notes; no.20. Hyattsville, Maryland: National Center for Health Statistics. January 2001.

3. Curtin, LR, Klein, RJ. Direct Standardization (Age-Adjusted Death Rates). Statistical notes; no.6. Hyattsville, Maryland: National Center for Health Statistics. March 1995.

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