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Multivariable effect estimates of travel time to treating hospital on risk of complicated appendicitis Odds ratios are shown with 95 per cent confidence intervals. Regression analyses were adjusted for socioeconomic determinants, age, year and the ICD‐10 revision, and stratified by county of treatment. *Cases with an estimated travel time of 240 minutes or more were considered outliers and excluded from the multivariable analysis.
