Table 2 Univariable analysis of factors associated with overall survival

 Stage IIB/C

2.15

(2.07, 2.24)

<.0001

1.70

(1.62, 1.78)

<.0001

 Stage IIIA

1.00

–

–

1.00

–

–

 18–49

1.00

–

–

1.00

–

–

 50–64

1.30

(1.17, 1.45)

<.0001

1.41

(1.22, 1.63)

<.0001

 65–74

2.23

(2.02, 2.48)

<.0001

2.48

(2.16, 2.86)

<.0001

 75 and more

4.86

(4.41, 5.37)

<.0001

5.12

(4.47, 5.87)

<.0001

 White

1.00

–

–

1.00

–

–

 Black

0.96

(0.91, 1.02)

0.19

1.06

(0.98, 1.14)

0.14

 American Indian, Aleutian, or Eskimo

0.90

(0.61, 1.33)

0.60

0.93

(0.58, 1.47)

0.75

 Asian or Pacific Islander

0.55

(0.47, 0.64)

<.0001

0.62

(0.50, 0.75)

<.0001

 Other

0.63

(0.46, 0.87)

0.005

0.64

(0.41, 0.99)

0.05

 Community cancer program

1.39

(1.31, 1.48)

<.0001

1.40

(1.30, 1.52)

<.0001

 Comprehensive community cancer center

1.21

(1.16, 1.26)

<.0001

1.24

(1.17, 1.31)

<.0001

 Academic research program

1.00

–

–

1.00

–

–

 New England

1.08

(0.99, 1.18)

0.10

0.94

(0.84, 1.06)

0.32

 Mid Atlantic

1.07

(0.99, 1.16)

0.07

0.98

(0.89, 1.08)

0.68

 South Atlantic

1.06

(0.99, 1.13)

0.12

1.00

(0.92, 1.09)

0.98

 East North Central

1.10

(1.03, 1.18)

0.008

1.04

(0.95, 1.14)

0.39

 East South Central

1.09

(0.998, 1.20)

0.05

1.08

(0.97, 1.21)

0.16

 West North Central

1.10

(1.005, 1.19)

0.04

1.04

(0.94, 1.16)

0.43

 West South Central

1.01

(0.92, 1.11)

0.80

0.99

(0.89, 1.11)

0.84

 Mountain

0.93

(0.83, 1.04)

0.20

0.87

(0.75, 1.01)

0.06

 Pacific

1.00

–

–

1.00

–

–

 Metro ≥1 million

1.00

–

–

1.00

–

–

 Metro 250 k to 1 million

1.07

(1.02, 1.12)

0.008

1.09

(1.03, 1.15)

0.004

 Urban <250 k

1.07

(1.004, 1.14)

0.04

1.06

(0.98, 1.14)

0.17

 Urban ≥ 20 k adjacent metro

1.10

(1.002, 1.21)

0.046

1.10

(0.98, 1.24)

0.09

 Urban ≥ 20 k not adjacent metro

1.04

(0.89, 1.22)

0.65

1.05

(0.87, 1.26)

0.63

 Urban <20 k adjacent metro

1.13

(1.04, 1.23)

0.006

1.06

(0.95, 1.18)

0.30

 Urban <20 k not adjacent metro

1.23

(1.10, 1.38)

0.0005

1.32

(1.15, 1.52)

0.0001

 Rural <2500 adjacent metro

1.02

(0.85, 1.24)

0.81

0.88

(0.68, 1.14)

0.33

 Rural <2500 not adjacent metro

1.12

(0.94, 1.33)

0.21

1.06

(0.85, 1.32)

0.58

 0

1.00

–

–

1.00

–

–

 1

1.46

(1.40, 1.53)

<.0001

1.49

(1.42, 1.58)

<.0001

 2

2.29

(2.16, 2.42)

<.0001

2.29

(2.13, 2.46)

<.0001

 Cecum

1.00

–

–

1.00

–

–

 Ascending Colon

0.96

(0.91, 1.02)

0.15

1.04

(0.97, 1.11)

0.30

 Hepatic Flexure

0.97

(0.88, 1.07)

0.51

0.95

(0.84, 1.07)

0.39

 Transverse Colon

1.07

(0.997, 1.14)

0.06

0.93

(0.85, 1.02)

0.11

 Splenic Flexure

1.07

(0.96, 1.18)

0.23

0.90

(0.77, 1.04)

0.15

 Descending Colon

0.85

(0.78, 0.93)

0.0003

0.85

(0.77, 0.95)

0.003

 Sigmoid Colon

0.76

(0.72, 0.80)

<.0001

0.82

(0.77, 0.87)

<.0001

 Overlapping Lesions

1.19

(1.03, 1.38)

0.02

0.80

(0.62, 1.03)

0.08

 Not Otherwise Specified

1.14

(1.004, 1.29)

0.04

1.13

(0.95, 1.33)

0.17

 Well differentiated

1.00

–

–

1.00

–

–

 Moderately differentiated

1.09

(1.02, 1.16)

0.01

1.04

(0.96, 1.13)

0.37

 Poorly differentiated

1.39

(1.29, 1.50)

<.0001

1.11

(1.01, 1.22)

0.03

 Undifferentiated, anaplastic

1.74

(1.53, 1.97)

<.0001

1.23

(1.02, 1.48)

0.03

 No residual tumor

1.00

–

–

1.00

–

–

 With Residual tumor

1.91

(1.81, 2.02)

<.0001

1.24

(1.03, 1.49)

0.02

 Not readmitted

1.00

–

–

1.00

–

–

 Readmitted

1.15

(1.08, 1.22)

<.0001

1.13

(1.05, 1.22)

0.002

 0–11

1.34

(1.29, 1.39)

<.0001

1.29

(1.23, 1.35)

<.0001

 12–90

1.00

–

–

1.00

–

–

 Yes

1.00

–

–

1.00

–

–

 No

3.55

(3.41, 3.70)

<.0001

3.49

(3.32, 3.67)

<.0001