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Table 4 Prediction for length of stay using medical records and claims data-based comorbidity index score

From: A comparison of the Charlson comorbidity index derived from medical records and claims data from patients undergoing lung cancer surgery in Korea: a population-based investigation

   Exp[coefficient] based on medical records 95% Confidence interval Exp[coefficient] based on claims data 95% Confidence interval
Age[years] ≤ 49 1   1  
  50-59 1.06 (0.880-1.295) 1.06 (0.871-1.282)
  60-69 1.2 (1.000-1.448) 1.19 (0.986-1.427)
  ≥ 70 1.07 (0.866-1.328) 1.05 (0.846-1.305)
Gender male 1   1  
  female 0.96 (0.832-1.113) 0.96 (0.833-1.116)
Histologic subtype squamous cell carcinoma 1   1  
  adenocarcinoma 0.95 (0.834-1.094) 0.96 (0.839-1.101)
  bronchoalveolar carcinoma 1.1 (0.827-1.471) 1.1 (0.827-1.473)
  large cell carcinoma 0.79 (0.372-1.675) 0.8 (0.377-1.709)
  small cell carcinoma 1.21 (0.654-2.268) 1.19 (0.640-2.227)
  other 0.94 (0.552-1.626) 0.96 (0.558-1.639)
Surgical treatment type wedge resection 1   1  
  lobectomy 1.15 (0.832-1.607) 1.18 (0.851-1.641)
  pneumonectomy 0.98 (0.674-1.438) 1.01 (0.688-1.469)
  other 1.43 (0.721-2.864) 1.46 (0.729-2.913)
Pathologic stage I 1   1  
  II 0.96 (0.832-1.123) 0.97 (0.838-1.132)
  III 1.13 (0.993-1.302) 1.15* (1.005-1.314)
CCI score 0 1   1  
  1 0.92 (0.809-1.062) 0.99 (0.863-1.128)
  2+ 0.94 (0.775-1.144) 1 (0.872-1.142)
  1. *p < 0.05 according to multiple linear regression analysis using log-transformed length of stay