How many cancer patients and controls would be required to estimate the difference in proportions of patients with sufficient concentrations of plasma antioxidants vitamins with margin of error not exceeding 5% using 95% CI?
Data Table Provided for question
|
N
|
% with sufficient concentrations of plasma antioxidant vitamins
|
|
Throat Cancer Patients
|
25
|
47%
|
|
Controls
|
25
|
56%
|