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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
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