Question

Problem 2 (1.5 points, 0.5 point each) Date of onset of illness Date of death Date of recovery Person # 1 2 3 4 5 6 7 8 9 10 Oct. 1, 1990 Apr. 1, 1991 Sep. 30, 1991 The figure above represents ten episodes of an illness (?) in a population of 20 over a period of 16 months. Each horizontal line represents the portion of time one person spends being ill. The line begins on the date of onset and ends on the date of death or recovery. Calculate the following rates: a. Point prevalence on October 1, 1990 6/20 b. Period prevalence, October 1, 1990 to September 30, 1991 c. Cumulative incidence from October 1, 1990 to Sept 30, 1991

          Problem 2 (1.5 points, 0.5 point each)

Date of onset of illness
Date of death
Date of recovery

Person #
1
2
3
4
5
6
7
8
9
10

Oct. 1, 1990
Apr. 1, 1991
Sep. 30, 1991

The figure above represents ten episodes of an illness (?) in a population of 20 over a period of 16 months. Each horizontal line represents the portion of time one person spends being ill. The line begins on the date of onset and ends on the date of death or recovery.

Calculate the following rates:
a. Point prevalence on October 1, 1990
6/20
b. Period prevalence, October 1, 1990 to September 30, 1991

c. Cumulative incidence from October 1, 1990 to Sept 30, 1991

Problem 2 (1.5 points, 0.5 point each)

Date of onset of illness
Date of death
Date of recovery

Person #
1
2
3
4
5
6
7
8
9
10

Oct. 1, 1990
Apr. 1, 1991
Sep. 30, 1991

The figure above represents ten episodes of an illness (?) in a population of 20 over a period of 16 months. Each horizontal line represents the portion of time one person spends being ill. The line begins on the date of onset and ends on the date of death or recovery.

Calculate the following rates:
a. Point prevalence on October 1, 1990
6/20
b. Period prevalence, October 1, 1990 to September 30, 1991

c. Cumulative incidence from October 1, 1990 to Sept 30, 1991

Added by Bryan N.

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