Secondary outcomes subgroup 2
| Non-operative treatment, n | Direct appendectomy, n | Unadjusted OR | Propensity score adjusted OR | P value | |
| Any complication | |||||
| Admission, n (%) | N (% of total) | N (% of total) | OR (95% CI) | OR (95% CI) | p=0.XX |
| 30 days, n (%) | N (% of total) | N (% of total) | OR (95% CI) | OR (95% CI) | p=0.XX |
| Intra-abdominal abscess (at 3 months), n (%) | N (% of total) | N (% of total) | OR (95% CI) | OR (95% CI) | p=0.XX |
| Superficial site infection (at 3 months), n (%) | N (% of total) | N (% of total) | OR (95% CI) | OR (95% CI) | p=0.XX |
| Secondary/prolonged bowel obstruction (at 3 months), n (%) | N (% of total) | N (% of total) | OR (95% CI) | OR (95% CI) | p=0.XX |
| Length of hospital stay (days) | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| Level of pain (during admission) | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| Extra visits to GP, outpatient clinic or emergency department | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| No appendectomy after 3 months, n (%) | N (% of total) | – | – | – | – |
| Recurrent appendicitis (3 months), n (%) | N (% of total) | – | – | – | – |
| Early failure of non-operative treatment, n (%) | N (% of total) | – | – | – | – |
| Interval appendectomy (at 3 months), n (%) | N (% of total) | – | – | – | – |
| Hr-QoL (PedsQL 4.0) | |||||
| Admission | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| 30 days | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| 3 months | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| Patient satisfaction (3 months) | |||||
| NET Promoter Score | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| PSQ-18 | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| Direct costs (3 months) | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
| Indirect costs (3 months) | Mean (SD) | Mean (SD) | Mean difference | Mean difference | p=0.XX |
*This column presents the pooled/combined results of the five propensity score strata.
GP, general practitioner; Hr-QoL, Health-related Quality of Life; NET, neuro-endocrine tumours; PSQ, Patient Satisfaction Questionnaire.