Question

Q1. A total of 1,176,453 deaths (all causes in the whole population) were reported in country X in 2003. The mid-year population in 2003 was estimated to be 198,812,000. HIV related deaths and mid-year population by age-group are given below.

Age group (years)	HIV-related deaths	Mid-year population	Age specific HIV related death rate (per 100,000 population)
0-4	110	11,217, 000	1.0
5-14	30	28,146,000
15-24	423	31,698,000	1.3
25-34	4328	37,315,000	11.6
35-44	4096	29,305,000
45-54	1522	19,276,000	7.9
55+	897	41,855,000	2.1
Total	11406	198,812,000

(a) Calculate the crude death rate (from all causes) in country X in 2003. (2pts)

(b) Calculate the crude HIV-related death rate in country X in 2003 in the whole population. (2pts)

(c) Calculate the age specific HIV-related death among 5-14year-olds and among 35-44year-olds. (1 + 1pt)

HIV-related deaths and mid-year population by age group in Country Y in 2003 are given below

Age group (years)	HIV-related deaths	Mid-year population	Age specific HIV related death rate (per 100,000 population)
0-4	336	33,600,000
5-14	87	62,400,000
15-24	499	38,400,000
25-34	4454	38,400,000
35-44	3360	24,000,000
45-54	1516	19,200,000
55+	504	24,000,000
Total	10756	240,000,000	4.5

(d) Calculate the age-specific HIV-related death rates for country Y in 2003, and complete the above table.(4pts)

(e) Can you conclude that a person living in country X has a risk of dying from HIV that is 1.2 times as high as a person living in country Y? Give a reason for your answer (2pts)

Answer 1

Q1 (a)

CRUDE DEATH RATE

Definition:

CRUDE DEATH RATE is the total number of deaths to residents in a specified geographic area
(country, state, county, etc.) divided by the total population for the same geographic area (for a specified time period, usually a calendar year) and multiplied by 100,000.

Calculation:

Total Resident Deaths
------------------------------- X 100,000
Total Population   

To calculate the crude death rate (from all causes) in country X in 2003.

According to the given data,

Total death reported in country X (2003) = 1,176,453

The mid-year population in 2003 = 198,812,000.

Calculation :

The  crude death rate (from all causes) is 591.7 resident per 100000 population in country X in 2003.

Q1(b)

CAUSE-SPECIFIC DEATH RATE is the number of deaths from a specified cause per 100,000
person-years at risk.

Calculation:

Number of Deaths From
Specified Cause
-------------------------------- x 100,000
Total Population

According to the given data,

Total HIV-related death rate in country X in 2003 = 11406

Total population = 198,812,000

Calculation:

Hence, the crude HIV-related death rate in country X in 2003 in the whole population were 5.7

Q1 (c)

AGE-SPECIFIC DEATH RATE is the total number of deaths to residents of a specified age or age group in a specified geographic area (country, state, county, etc.) divided by the population of the same age or age group in the same geographic area (for a specified time period, usually a calendar year) and multiplied by 100,000 .

Calculation:

Total Deaths in Specified Age Group
------------------------------------------------------- X 100,000
Total Population in the Same Specified
Age Group

According to the data shown in table,

• HIV-related death among 5-14year-olds = 30 in 2814600 population

Calculation:

The age specific HIV related death among 5-14 years per 100000 is 0.106 deaths.

• HIV-related death among 35-44year-olds = 4096 in 29,305,000 population.

Calculation :

The age specific HIV-related death among 35-44year-olds is 14 deaths per 100,000