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Table 2 Multivariable logistic regression models of Laparoscopic Surgery and Open Surgery, Nationwide Inpatient Sample, 2007-2011

From: Race/ethnicity and socio-economic differences in colorectal cancer surgery outcomes: analysis of the nationwide inpatient sample

  Laparoscopica Open Surgerya   Laparoscopic vs.
Open Surgeryb
N OR (95 % CI) N OR (95 % CI) P-value OR (95 % CI) P-value
Age 19221 0.99(0.93, 0.99) 84429 0.99 (0.99, 0.98) <.0001 1.00 (0.99, 1.00) 0.7739
Sex      <.0001   <.0001
 Male 9280 Ref 42324 Ref   Ref  
 Female 9878 1.19 (1.14, 1.24) 41983 1.10 (1.07, 1.13)   1.09 (1.05, 1.13)  
Race/Ethnicity      <.0001   0.2122
 White 13285 Ref 53054 Ref   Ref  
 Black 1766 0.74 (0.69, 0.79) 7325 0.75 (0.72, 0.79)   0.97 (0.91, 1.04)  
 Hispanic 1231 0.88 (0.82, 0.95) 4606 0.83 (0.79, 0.88)   1.05 (0.98, 1.13)  
 Other 1045 0.85 (0.79, 0.93) 4311 0.90 (0.86, 0.96)   0.95 (0.88, 1.03)  
Residential Income      <.0001   <.0001
 Q4-Highest 5285 Ref 19219 Ref   Ref  
 Q3 4985 0.86 (0.82, 0.91) 20253 0.97 (0.93, 1.01)   0.89 (0.85, 0.94)  
 Q2 4619 0.78 (0.74, 0.83) 21873 0.90 (0.86, 0.94)   0.86 (0.82, 0.91)  
 Q1-Lowest 3953 0.64 (0.60, 0.68) 21347 0.86 (0.82, 0.90)   0.74 (0.70, 0.78)  
Stage      <.0001   <.0001
 Non-Metastatic 14865 Ref 56421 Ref   Ref  
 Metastatic 4356 0.37 (0.35, 0.38) 29246 0.66 (0.64, 0.68)   0.57 (0.54, 0.59)  
Insurance Type      <.0001   <.0001
 Private 6884 Ref 27472 Ref   Ref  
 Medicare 10863 0.94 (0.89, 0.99) 48239 0.99 (0.96, 1.04)   0.94 (0.89, 0.99)  
 Medicaid 693 0.28 (0.25, 0.31) 4283 0.48 (0.46, 0.51)   0.57 (0.51, 0.63)  
 Other 781 0.34 (0.31, 0.38) 4435 0.56 (0.53, 0.59)   0.63 (0.57, 0.69)  
Residential Region      <.0001   <.0001
 Large metro 10950 Ref 41199 Ref   Ref  
 Small metro 4974 0.99 (0.94, 1.04) 23398 1.18 (1.14, 1.22)   0.83 (0.79, 0.87)  
 Micropolitan 1699 0.82 (0.76, 0.88) 10561 1.25 (1.20, 1.31)   0.64 (0.60, 0.69)  
Comorbidities      <.0001   <.0001
 0 13721 Ref 58363 Ref   Ref  
 1 4115 0.79 (0.75, 0.83) 19119 0.89 (0.86, 0.92)   0.89 (0.84, 0.93)  
 ≥ 2 1385 0.64 (0.59, 0.69) 6947 0.80 (0.76, 0.85)   0.81 (0.75, 0.87)  
  1. Adjusted for age, sex, diagnosis year, race, income, stage, insurance, residential region and comorbidities
  2. aMultinomial regression model for laparoscopic surgery and open surgery versus no surgery
  3. bMultivariable logistic regression model comparing laparoscopic surgery versus open surgery among CRC patients who received surgery