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Advanced Epidemiology / statistics calculations (Example)

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1) Calculate odd ratio A= 94 B=133 C=6 D=67 ODD RATIO=A*D / B*C = 94*67 / 133*6 = 6 298/798 =7.89 When the odd ratio is more than one it shows that ill are more exposed than the well Determining the significant Using chi-square test X ^2= { (ad-bc)^2(a+b+c+d) } / (a+c) (c+d) (b+d) (a+c) =(94*67-133*6)^2 (94+133+6+67) / (94+6) (6+67) (133+67)(94+6) =(30250000) (300) / 146000000 =6.256 The significant value is more than 0.5 2) A) RELATIVE RISK Relative risk = (A / A + B C ) / (C/C+D) ( 36 / 36 +164 ) / (2 C=40 D=60 (90/90+10) / (40/40+60) =0.180 b) What epidemiologic trap is illustrated by these tables? Table 7 gives a relative risk of less than one showing a smaller incidence in the exposed than the exposed .Table 9 also gives the same Table 8 gives relative risk of equal to one showing incidence in exposed is similar to that on unexposed c) What maneuver does one perform to come up with a meaningful relative risk for the entire class? By reducing the incidence of the unexposed will bring a low relative risk which may be less than one [...]

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Written exercise: 1) calculation of RR, 2) calculation of OR; 3) calculations of AR,ARF, PAR, PARF; 4) calculations of sens, spec, PPV, NPV; 5) series of 3 tables showing confounding, with interpretation questions; 6) series of tables showing effect modification please use website to help with calculations https://onlinecourses.science.psu.edu/stat507/node/71

Subject Area: Statistics

Document Type: Dissertation Proposal

This project has already been completed by one of the Studybay experts. The client rated this project:

Project's rating is 5/5

Price $10

Words 275

Pages 1

Completed in 2 days

Expert Manaci

Client Review

Great work. Great communication. Will definitely work with him again!

Positive
10.26.2016

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