To calculate the age-adjusted rate, we must bring in the standard populations. The "U.S. 2000 Std Pop" column shows the projected population in the United States distributed among the 19 and 20 age groups in the year 2000. Proportions (or Age distributions) based on the standard population are calculated and shown in the column, "Age Dist of Std Pop". These will be used as the weights.

Unlike the populations added in the previous step, standard populations are not race and sex specific.

The age-adjusted rate is calculated by multiplying each crude rate by the appropriate weight and summing the products. The result for the 19 age groups is 190.934 and for the 20 age groups is 190.998.

Age Count Population Crude Rate U.S. 2000
Std Pop		 Age Dist
of Std Pop (19 age groups)		 Age-Adjusted Rate (19 age groups) Age Dist
of Std Pop (20 age groups)		 Age-Adjusted Rate (20 age groups)
00 years 0 600,100.000 0.000 3,794,901 0.01381805 0.000 0.01381805 0.000
01-04 years 0 2,448,220.000 0.000 15,191,619 0.05531594 0.000 0.05531594 0.000
05-09 years 0 3,154,386.000 0.000 19,919,840 0.07253241 0.000 0.07253241 0.000
10-14 years 0 3,333,214.000 0.000 20,056,779 0.07303103 0.000 0.07303103 0.000
15-19 years 4 3,293,630.000 0.121 19,819,518 0.07216712 0.009 0.07216712 0.009
20-24 years 87 3,409,133.000 2.552 18,257,225 0.06647847 0.170 0.06647847 0.170
25-29 years 542 3,788,166.000 14.308 17,722,067 0.06452985 0.923 0.06452985 0.923
30-34 years 1,359 3,638,814.000 37.347 19,511,370 0.07104508 2.653 0.07104508 2.653
35-39 years 2,454 3,339,743.000 73.479 22,179,956 0.08076198 5.934 0.08076198 5.934
40-44 years 4,305 3,133,986.000 137.365 22,479,229 0.08185169 11.244 0.08185169 11.244
45-49 years 5,751 3,029,696.000 189.821 19,805,793 0.07211714 13.689 0.07211714 13.689
50-54 years 7,249 3,069,753.000 236.143 17,224,359 0.06271759 14.810 0.06271759 14.810
55-59 years 8,900 3,133,644.000 284.014 13,307,234 0.04845449 13.762 0.04845449 13.762
60-64 years 9,716 2,845,989.000 341.393 10,654,272 0.03879449 13.244 0.03879449 13.244
65-69 years 9,524 2,275,834.000 418.484 9,409,940 0.03426361 14.339 0.03426361 14.339
70-74 years 7,655 1,694,314.000 451.805 8,725,574 0.03177169 14.355 0.03177169 14.355
75-79 years 5,036 1,110,105.000 453.651 7,414,559 0.02699800 12.248 0.02699800 12.248
80-84 years 3,233 730,514.000 442.565 4,900,234 0.01784280 7.897 0.01784280 7.897
85+ years 2,610 715,408 364.827 4,259,173 0.01550856 5.658    
    85-89 years 1,707 420,278 406.160 2,678,567     0.00975324 3.961
    90+ years 903 295,130 305.967 1,580,606     0.00575533 1.761
All Ages       274,633,642 1.000000 130.934 1.000000 130.998

Note: these values were calculated using the SEER 21 registry limited-field database from the Nov 2024 submission.

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