The World Health Organization's (WHO) new World Standard Population, described in Discussion Paper 31: Age Standardization of Rates: A New WHO StandardExternal Web Site Policy, was added to SEER*Stat in April 2013. Because the WHO population proportions for each age group do not sum to 100 percent, we adjusted the proportions to add precision so they sum to a round number. To use these proportions in SEER*Stat, we had to convert the values to integers. The table below summarizes the adjustments made for use in SEER*Stat.

Age Group WHO World Standard (%) Recalculation to add to 1,000,000 Rounded to Integers Standard For SEER*Stat
0-4 8.860 88569.00084970260000 88,569 88,569
5-9 8.690 86869.59564152550000 86,870 86,870
10-14 8.600 85969.91053131400000 85,970 85,970
15-19 8.470 84670.36537211980000 84,670 84,670
20-24 8.220 82171.24006597690000 82,171 82,171
25-29 7.930 79272.25471085120000 79,272 79,272
30-34 7.610 76073.37431898840000 76,073 76,073
35-39 7.150 71474.98375568550000 71,475 71,475
40-44 6.590 65876.94306992550000 65,877 65,877
45-49 6.040 60378.86739641130000 60,379 60,379
50-54 5.370 53681.21157594840000 53,681 53,681
55-59 4.550 45484.08057179990000 45,484 45,484
60-64 3.720 37186.98455540560000 37,187 37,187
65-69 2.960 29589.64362473130000 29,590 29,590
70-74 2.210 22092.26770630280000 22,092 22,092
75-79 1.520 15194.68186134850000 15,195 15,195
80-84 0.910 9096.81611435998000 9,097 9,097
85-89 0.440 4398.46053881142000 4,398 4,398
90-94 0.150 1499.47518368571000 1,499 1,500*
95-99 0.040 399.86004898285600 400 400
100+ 0.005 49.98250612285700 50 50
Total 100.035 1000000.000 999,999 1,000,000

* The Standard in SEER*Stat for the 90-94 age group needed to be increased by one so the total would sum to 1,000,000. That group was selected because it was the number closest to rounding up that did not.

The World (WHO 2000-2025) Standards database is provided for 18 and 19 age groups, as well as single ages. To derive the single ages from the 5-year age group proportions, we used the Beers "Ordinary" Formula. For more information on why we use single ages, refer to 2000 U.S. Standard Population vs. Standard Million.