Level 1	Recurrences can be prevented by using increased overlap of the biomaterial and dual methods of fixation (tacks and transfascial sutures)
Level 3	Incisional and ventral hernias larger than 2 cm are preferably repaired using a prosthesis because primary repair has a high rate of recurrence
Level 3	Use of mesh in a repair of incisional hernia reduces the risk of recurrence
Level 3	A mesh overlap of at least 5 cm and fixation of the lower margin of the mesh under direct vision to Cooper’s ligaments appear to confer increased strength and durability and contribute to low hernia recurrence rates in patients with suprapubic hernias
Level 4	Meticulous use of transfascial sutures with other fixation methods improves recurrence rates for high-risk obese patients
Level 4	Insufficient coverage of the incision scar is a risk factor for recurrence after laparoscopic repair of ventral and incisional hernia; hence the entire incision and not just the hernia must be covered with mesh
Level 5	Some surgeons consider that suture fixation of mesh is mandatory in laparoscopic ventral hernia repair to avoid a higher recurrence rate
Level 5	Some surgeons believe that total intraperitoneal fixation with tacks reduces the surgical time, avoids parietal vascular injuries and postoperative pain, and maintains a similar recurrence rate