41. (1.5 poind a Mounts of processed Oo pressure and amounts of wants to assess

Question

41. (1.5 poind a Mounts of processed Oo pressure and amounts of wants to assess the association between the prevalence of high blood r processed foods. The education level is found to be a confounder Compute the se f reference group omparing diet high in processed foods group vs. diet low in processed fookds gro und to 2 decimal places) HINT: you need to rearrange the table Diet Low in Processed Foods Total %79 221 High BP College Education High School Education Total Normal BP 124 69 193 152 400 207 Normal BP 64 98 162 Diet High in Processed Foods High BP 85 Total 149 251 College Education High School Education Total 153 400 238 comparing diet high in processed foods group vs. diet low in processed foods group (reference group). (round to 2 decimal places) 42. (1.5 points) Based on the data provided in Q41, compute the education level adjusted OR for high BP

Explanation / Answer

Part (a)

High BP – Low Diet vs High Diet

Under the ‘Diet Low on Processed Food’ category, OR for High BP = 207/400 = 0.51.

Under the ‘Diet High on Processed Food’ category, OR for High BP = 238/400 = 0.58.

Numerically, the latter OR is higher which is possibly an indication that High has a tendency to increase BP. ANSWER

Part (b)

High BP vs Education

Under the ‘Diet Low on Processed Food’ category,

OR for High BP = 65/179 = 0.36 for ‘College Education’

And 152/221 = 0.69 for ‘High School Education’. Possibly implying that higher education has favourable impact on BP. ANSWER 1

Under the ‘Diet High on Processed Food’ category,

OR for High BP = 85/149 = 0.57 for ‘College Education’

And 153/251 = 0.61 for ‘High School Education’. Possibly implying that higher education has favourable impact on BP albeit only marginally. ANSWER 2

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