for the questions below, use the following narrative: employment records identified 1,000 workers who were occupationally exposed to intense physical activities at work, and 2,000 workers who were not occupationally exposed to intense physical activity. these records were subsequently linked with hospital records to identify cases of musculoskeletal injuries of the back from 1990 to 2000. during this time, there were 120 cases of musculoskeletal injuries of the back in the intense physical activity exposed workers, and 25 cases among the unexposed workers.

| |musculoskeletal injuries of back|no injuries|total|
|--|--|--|--|
|intense physical activity|a|b|1,000|
|less than intense physical activity|c|d|2,000|
|total|145|2,855|3,000|

each correct cell number is worth 1 point.
cell a is blank 1.
cell b is blank 2.
cell c is blank 3.
cell d is blank 4.
the exposure is blank 5. simply name the exposure (1 point).
the outcome is blank 6. simply name the outcome (1 points).

Question

for the questions below, use the following narrative: employment records identified 1,000 workers who were occupationally exposed to intense physical activities at work, and 2,000 workers who were not occupationally exposed to intense physical activity. these records were subsequently linked with hospital records to identify cases of musculoskeletal injuries of the back from 1990 to 2000. during this time, there were 120 cases of musculoskeletal injuries of the back in the intense physical activity exposed workers, and 25 cases among the unexposed workers.

| |musculoskeletal injuries of back|no injuries|total|
|--|--|--|--|
|intense physical activity|a|b|1,000|
|less than intense physical activity|c|d|2,000|
|total|145|2,855|3,000|

each correct cell number is worth 1 point.
cell a is blank 1.
cell b is blank 2.
cell c is blank 3.
cell d is blank 4.
the exposure is blank 5. simply name the exposure (1 point).
the outcome is blank 6. simply name the outcome (1 points).

Accepted Answer

# Explanation:
## Step1: Determine value of A
A represents the number of musculoskeletal injuries of the back among workers with intense physical activity. Given as 120.
A = 120
## Step2: Determine value of B
B is the number of workers with intense physical activity and no injuries. Total workers with intense physical activity is 1000 and injured is 120. So B=1000 - 120.
B = 1000 - 120 = 880
## Step3: Determine value of C
C represents the number of musculoskeletal injuries of the back among workers with less - than intense physical activity. Given as 25.
C = 25
## Step4: Determine value of D
D is the number of workers with less - than intense physical activity and no injuries. Total workers with less - than intense physical activity is 2000 and injured is 25. So D = 2000 - 25.
D = 2000 - 25 = 1975
## Step5: Identify exposure
The exposure is occupational exposure to intense physical activity.
## Step6: Identify outcome
The outcome is musculoskeletal injuries of the back.

# Answer:
Blank 1: 120
Blank 2: 880
Blank 3: 25
Blank 4: 1975
Blank 5: Occupational exposure to intense physical activity
Blank 6: Musculoskeletal injuries of the back

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QUESTION IMAGE

Question

Explanation:

Step1: Determine value of A

Step2: Determine value of B

Step3: Determine value of C

Step4: Determine value of D

Step5: Identify exposure

Step6: Identify outcome

Answer:

	musculoskeletal injuries of back	no injuries	total
less than intense physical activity	c	d	2,000
total	145	2,855	3,000