Table 7.

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.