Reoperation for Inguinal Hernia Recurrence in Ontario: A Population-based Study

Objective: To compare the rate of reoperation for recurrent inguinal hernia after primary repair. Methodology: A population-based retrospective cohort study, using administrative data including adult patients in Ontario, Canada undergoing primary inguinal hernia repair (IHR) from April 1, 2003 - December 31, 2012, followed to August 31, 2014. Exposure: Primary IHR techniques: open repair with mesh; open repair without mesh; laparoscopic repair Results: We identified 109,106 adults undergoing primary IHR with 5.6 year median follow-up. The 5-year cumulative risk of recurrent IHR was 1.7% in the open with mesh group, 3.2% in the open without mesh group and 3.0% in the laparoscopic group. After adjusting for patient, surgeon and institution factors, as compared to patients undergoing open repair with mesh, those undergoing open without mesh or laparoscopic repair had higher risk of recurrent IHR (hazard ratio 1.53, 95% CI, 1.33- 1.77 and 1.88, 95% CI, 1.61- 2.20 respectively, pM.Sc.2018-11-27 00:00:0