Case Report
Copyright ©2014 Baishideng Publishing Group Inc.
World J Gastrointest Surg. Jul 27, 2014; 6(7): 142-145
Published online Jul 27, 2014. doi: 10.4240/wjgs.v6.i7.142
Table 2 Association between isotretinoin and ulcerative colitis in case control studies
Ref.PopulationUC [RR (95%CI)]
Bernstein et al[2]Residents of Manitoba Canada1.16 (0.56-2.20)
Crockett et al[8]US health claims database4.36 (1.97-9.66)
Etminan et al[7]Women using oral contraceptives1.10 (0.44-2.70)
Alhusayen et al[1]British Columbia residents1.31 (0.96-1.80)