1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kiruha [24]
3 years ago
6

A cohort study was undertaken to examine the association between high lipid level and coronary heart disease. Participants were

classified as having either a high lipid level (exposed) or a low or normal lipid level (unexposed). Because age is associated with both lipid level and risk of heart disease, age was considered a potential confounder, and the age of each subject was recorded. The following data describes the study participants:Overall, there were 11,000 young participants and 9,000 old participants. Of the 4,000 young participants with high lipid levels, 20 of them developed CHD. Of the 6,000 old participants with high lipid levels, 200 of them developed CHD. In the unexposed, 18 young and 65 old participants developed CHD.1. Construct the appropriate two by two tables using the data given above. Be sure to label the cells and margins.2. Calculate the appropriate crude ratio measure of association combining the data for young and old individuals.3. Now, perform a stratified analysis and calculate the appropriate stratum-specific ratio measures of association. What are they?4. Do the data provide evidence of effect measure modification on the ratio scale? Justify your answer.
Mathematics
1 answer:
Marrrta [24]3 years ago
8 0

Step-by-step explanation:

1. Is a table which is contained in the attachment

2. The crude ratio measure

= 4000x3000+20*5800/7000*6000+200*3980

= 12000000+116000/42000000+796000

= 12116000/42796000

= 0.283

3. Stratum specific for high lipid

= 12000000/42000000

= 0.285

= 0.29

Stratum specific for chf

= 116000/796000

= 0.145

= 0.15

4. High lipid has higher risk than chd from the solution here

You might be interested in
What is the exact volume of a cylinder 6in 9in
inna [77]
To find the exact volume of a cylinder, you must remember the rule - π r2 h

If 6 inches was the base (radius from the center of the cylinder to the edge) and 9 inches was the height, the equation would look like this -

π (6 squared in) (9 in)

Remember that the radius is squared so the equation would then look like

π (36 in) (9in)

Now you multiply 36 and 9 which would give you 324, then your equation would look like this

324 π

The final step is to multiply 324 by π which would be the volume of a cylinder.


8 0
3 years ago
Sketch the graphs using 3 points that belong to it. a y = 3x + 2
aliina [53]

The graph is attached

Hope this helps

3 0
3 years ago
Read 2 more answers
Can lots yall people make lots of questions and friend me and tell me when yall make the question brainliest me and make a 50 pt
balu736 [363]

Step-by-step explanation:

30² would give 900, none of the above

4 0
3 years ago
Read 2 more answers
How would you graph (on a number line) (x-8)(x-8)<0??
Marta_Voda [28]

Answer:

  The graph is the empty number line (no solution)

Step-by-step explanation:

Your expression is (x-8)² < 0. There are no real numbers that give a negative value when squared. There is NO SOLUTION. The graph is empty.

_____

<em>Comment on quadratic inequalities</em>

In general the inequality (x-a)(x-b) < 0 will have a solution when one factor is negative and the other is positive. In general, that will be the case for values of x that are strictly between <em>a</em> and <em>b</em>. In your inequality, that would require you graph numbers that are between 8 and 8. There are none.

5 0
4 years ago
Please help me with these 2 questions. I am not good with angles
DIA [1.3K]
They are 1st one is vertical angles, second one is complementary
8 0
3 years ago
Read 2 more answers
Other questions:
  • X - 4y= 4<br><br> x-intercept:__________<br> y-intercept:__________
    15·1 answer
  • What is the common between 2,8, 14, 20, 26
    15·1 answer
  • X^2 +x-6=0<br> How to solve this ?
    6·1 answer
  • Ruby plans to make 3 quilts per month until she makes 15 quilts. She figures this will take 15 month.
    13·1 answer
  • the doctor recommended that Matt increase the number of calories he consumed from 2000 to 2800. By what percent did the number o
    13·1 answer
  • Estimate a 15% and a 20% tip for each amount paid at a restaurant. $59.03 __________ _______________. $31.89 __________ ________
    5·1 answer
  • What is the solution to this equation?
    13·1 answer
  • 26 points, Please help! <br><br> What is the scale factor?
    13·1 answer
  • ¿ Qué porcentaje de 70 es 35?
    5·1 answer
  • Name all possible transversals of lines m and n in the picture below​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!