Table 2.
Multivariable logistic regression models of Laparoscopic Surgery and Open Surgery, Nationwide Inpatient Sample, 2007-2011
| 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) | ||
Adjusted for age, sex, diagnosis year, race, income, stage, insurance, residential region and comorbidities
aMultinomial regression model for laparoscopic surgery and open surgery versus no surgery
bMultivariable logistic regression model comparing laparoscopic surgery versus open surgery among CRC patients who received surgery