Epidemiology – Direct Standardization

Epidemiology – Direct Standardization

Introduction: This assignment addresses competency 1: “Apply epidemiological methods to the breadth of settings and situations in public health practice”. It is one of several assignments that will be used to assess this competency (standardization, calculating measures, screening). You may submit the assignment as a .pdf, word document, or excel spreadsheet, or enter the answers in the textbook. Please make it legible, and easy to understand.

Assignment:

DIRECT STANDARDIZATION

Calculate and interpret crude and standardized mortality rates.

Table 1. Number of deaths of females and estimated mid-year population in Florida, 1997 by race

non-White femalesWhite females
(yrs)no. deathsest. mid-year pop.no. deathsest. mid-year pop.
<124923,32535669,690
1-45587,64383280,109
5-1456215,67098704,636
15-24143187,774297671,365
25-34360176,134590771,978
35-44603189,2231,312925,864
45-54701138,5452,362825,970
55-641,04182,7604,365667,617
65-741,47156,05211,388730,052
75-841,68731,60120,739563,050
85+1,49511,40524,543189,213

(1) What is the crude death rate for non-white females and for whites females?

Crude death rate per 1,000 for non-white females: _______________

Crude death rate per 1,000 for white females: ________________

Table 2. Age-specific death rates per 1,000 population among females.

non-White femalesWhite females
age-specific death rateage-specific death rate
Age group (yrs)per 1000 populationper 1000 population
<1
1-4
5-14
15-24
25-34
35-44
45-54
55-64
65-74
75-84
85+

(2) What are the age-specific death rates per 1,000 population for each age group for non-white and white females?

Table 3. 1990 US Female Population by Age Group

Age group (yrs)1990
US population
<11,928,000
1-47,231,000
5-1417,124,000
15-2418,098,000
25-3421,596,000
35-4418,925,000
45-5412,824,000
55-6411,158,000
65-7410,139,000
75-846,267,000
85+2,180,000

(3) Using direct standardization, what is the age-adjusted rate per 1,000 among non-white and white females using the 1990 US female population as the standard?

Age-adjusted death rate per 1,000 for non-white females: _______________

Age-adjusted death rate per 1,000 for white females: ________________

(4) Compare and interpret the crude and adjusted rates. Which rates – crude or adjusted- should be used for comparison? Why? Write a statement of the findings for a lay audience.

I’ve included all the information that was provided in the description. Along with completing the charts (sorry they are hard to read due to spacing) there are 4 questions to be answered as well. Please let me know if you need anything along the way.

 

 

Solution Preview

Crude Death Rate for Non-White Females and for Whites Females per 1000

            Crude Death Rate is calculated by dividing the total number of residential deaths by the total population over the mid-year and cross multiplying the answer by one hundred thousand.

Formulae                                  

(Total Residential Deaths ÷ Total Area Population) × 100,000

However in our calculations, we shall cross multiply our answer by one thousand as per the request.

crude death rate for non-white females.

 

Total residential deaths = 7258

Total mid-year population = 1,200,132

7258 ÷ 1,200,132 = 0.00604766808

0.00604766808 × 1000 = 6.04766808

As calculated above, the crude death rate for non-=white females is 6.047%

(951 words)

Epidemiology – Direct Standardization was last modified: by