Primary outcome subgroup 1
| Laparoscopic appendectomy, n | Open appendectomy, n | Absolute difference in proportions | Unadjusted OR | Propensity score adjusted absolute difference | P value | Propensity score adjusted OR | P value | |
| Complications after 3 months, n (%) | N (% of total) | N (% of total) | Absolute difference (95% CI) | OR (95% CI) | Absolute difference (95% CI) | p=0.XX | OR (95% CI) | p=0.XX |
| Complication severity | ||||||||
| Clavien-Dindo I | N (% of total) | N (% of total) | Absolute Difference (95% CI) | OR (95% CI) | Absolute Difference (95% CI) | p=0.XX | OR (95% CI) | p=0.XX |
| Clavien-Dindo II | N (% of total) | N (% of total) | Absolute Difference (95% CI) | OR (95% CI) | Absolute Difference (95% CI) | p=0.XX | OR (95% CI) | p=0.XX |
| Clavien-Dindo III | N (% of total) | N (% of total) | Absolute Difference (95% CI) | OR (95% CI) | Absolute Difference (95% CI) | p=0.XX | OR (95% CI) | p=0.XX |
| Clavien-Dindo IV | N (% of total) | N (% of total) | Absolute Difference (95% CI) | OR (95% CI) | Absolute Difference (95% CI) | p=0.XX | OR (95% CI) | p=0.XX |
*This column presents the pooled/combined results of the five propensity score strata.
†A similar table will be created for the subgroup analysis of patients with perioperative and histopathologically confirmed complex appendicitis without abscess or mass formation.