Number of knots tied using each knot technique that slipped and broke and slipped completely, and number and proportion that broke on testing
| Method of formation of square reef knot | Total no of knots formed that slipped | No of knots that slipped and then broke | No of knots that slipped completely without any suture breakage | Proportion of knots formed that broke and did not slip completely | 95% lower CI of proportion | 95% upper CI of proportion |
| Flat reef knot | 24 | 23 | 1 | 0.99 | 0.98 | 1.00 |
| No hand-crossing knot | 120 | 98 | 22 | 0.82 | 0.75 | 0.89 |
| Knot tied under tension | 120 | 67 | 53 | 0.56 | 0.47 | 0.65 |