You look back at the clinical notes of 100 patients at your practice who have vitamin D deficiency and 100 patients who have adequate levels of vitamin D to see whether having a vegan diet affected the outcome. Of the 100 cases with vitamin D deficiency, 12 patients were vegan. Of the 100 patients with adequate vitamin D levels 8 were vegan.
What is the odds ratio of being a vegan? All calculations are rounded to 2 decimal points.