1. 27 / 2390 = 0.011 2. 77 / 1908 = 0.04 3. 27 / 482 / 455 / 482 = 0.059 4. OR = 27 * 1831 / 77 * 455 = 1.41 RR = 27 / 482 / 77 / 1908 = 1.38 "Women using OC have 41% more odds to have bacteriuria" , "Bacteriuria is present in 38% more women using OC than women not using" 5. AR = 27 / 482 - 77 / 1908 = 0.015 / 0.056 = 0.27 ARP = 0.27 * 100 = 27% "27% of bacteriuria could be attributable to OC use" 6. PAR = ((104 ÷ 2390) − (77 ÷ 1908)) ÷ (104 ÷ 2390) = 0.073 PAR% = 0.073 * 100 = 7.3%
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