Standard population

Age structure, https://www.indexmundi.com/south_korea/age_structure.html

빅데이터를 분석할 경우, 나이를 고려하여 표준화 작업을 해주어야 하는 경우가 있다.

 

특히 다른 cohort나 연도 데이터들을 비교할 때, 나이에 따른 weight 를 곱하여 비교하여야 좀 더 정확한 결과를 얻을 수 있다.

 

이때 사용되는 weight를 정해 놓은 것이 standard population이고, 각 나이 구간의 crude rate에 곱하여 cohort의 motablity 를 구한다.

 

The standard population data files contain the following data:

- U.S. Standards (1940, 1950, 1960, 1970, 1980, 1990, 2000)
- Canadian Standards (1991, 1996, 2011)
- European (Scandinavian 1960) Standard2
- European (EU-27 plus EFTA 2011-2030) Standard
- World (Segi 1960) Standard2
- World (WHO 2000-2025) Standard2

 

Example. Age-standardized rate of Canadians with 1991 standard population weight per 100,000.

Age group	Characteristic	2000	2010
0 to 39 years	Estimate of population	17,068,876	17,191,850
	Number of deaths	1,345	1,004
	Crude rate	7.9	5.8
40 years and over	Estimate of population	13,616,854	17,150,930
	Number of deaths	61,325	71,472
	Crude rate	450.4	416.7
Total all ages	Estimate of population	30,685,730	34,342,780
	Number of deaths	62,672	72,476
	Crude rate	204.2	211.0
	Weight	61.6%	38.4%
	Adjusted rate*	177.9	163.6

* Adjusted rate = Sum of (crude rate)*(weight)

 

 

Reference

- Standard Populations (Millions) for Age-Adjustment, https://seer.cancer.gov/stdpopulations/

- World (WHO 2000-2025) Standard, https://seer.cancer.gov/stdpopulations/world.who.html

- Age-standardized Rates,

https://www.statcan.gc.ca/en/dai/btd/asr