Baseline characteristics according to hospital volume and surgeon volume (n = 13159).

<p>Abbreviation: SD, standard deviation; COPD, chronic obstructive pulmonary disease.</p

Short-term survival after hepatic resection by combined effect of surgeon and hospital volume.

<p>Short-term survival after hepatic resection by combined effect of surgeon and hospital volume.</p

The adjusted hazard ratios of provider categories in different regression models.

<p>Abbreviation: HR, hazard ratio; 95% CI, 95% confidence interval.</p><p>Adjusted for patients’ age, gender, indication for surgery, surgical procedure, comorbidity, hepatitis/cirrhosis, pre-and post-operative cirrhosis-related complication, socioeconomic status, geographic region and urbanization level of residence.</p

The adjusted hazard ratios of patient demographic variables.

<p>Abbreviation: HR, hazard ratio; 95% CI, 95% confidence interval; COPD, chronic obstructive pulmonary disease.</p

Hazard ratios of individual adjusted age-adjusted Charlson comorbidity index score for mortality.

Hazard ratios of individual adjusted age-adjusted Charlson comorbidity index score for mortality.</p

Adjusted Age-Adjusted Charlson Comorbidity Index Score as a Risk Measure of Perioperative Mortality before Cancer Surgery - Fig 1

<p>(A) 90-day mortality rate for the overall cohort by adjusted-ACCI score. (B) 90-day mortality rate for individual caner type by adjusted-ACCI score.</p

Comorbidity distribution based on the age-adjusted Charlson comorbidities, <i>n</i> = 156,151.

<p>Comorbidity distribution based on the age-adjusted Charlson comorbidities, <i>n</i> = 156,151.</p

Mortality of cancer surgery patients by cancer types and adjusted age-adjusted Charlson Comorbidity Index Score from 2007 to 2011, <i>n</i> = 156,151.

<p>Mortality of cancer surgery patients by cancer types and adjusted age-adjusted Charlson Comorbidity Index Score from 2007 to 2011, <i>n</i> = 156,151.</p

Multivariate logistic regression analysis.

Multivariate logistic regression analysis.</p

The average adjusted-AACI score for those who live beyond 90 days and for those who died prior to 90 days, Mean±SD, <i>n</i> = 156,151.

<p>The average adjusted-AACI score for those who live beyond 90 days and for those who died prior to 90 days, Mean±SD, <i>n</i> = 156,151.</p