Table 3.

Multivariable analysis of factors associated with treatment failure

Variable	β coefficient1	Adjusted OR	95% CI	p value
Female gender	0.60	1.83	0.92–3.65	0.09
Age	0.02	1.02	0.99–1.04	0.24
ASA score > 2	0.63	1.88	0.78–4.53	0.16
No rebound tenderness	0.72	2.05	0.95–4.43	0.07
CRP (mg/L)	0.01	1.01	1.001–1.01	0.02
Hospitalization2	0.89	2.44	1.21–4.90	0.01

All results in this table are results of multiple imputation and analyses are based on multivariable logistic regression analysis, corrected for hospitalization

Abbreviations: OR odds ratio, CI confidence interval, ASA American Society of Anesthesiologists, CRP C-reactive protein

¹β coefficients are expressed per 1 unit increase for the continuous variables and for the condition present in dichotomous variables

²Within 24 h after presentation