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Table 3 Logistic regression results for main effects and interactions of neighborhood poverty and primary payer by gender on 6-year colon cancer survival

From: Effects of being uninsured or underinsured and living in extremely poor neighborhoods on colon cancer care and survival in California: historical cohort analysis, 1996—2011

 

Women

Men

Predictor variables

No.a

OR

(95%CI)

No.a

OR

(95%CI)

Single predictor models

Neighborhood poverty

 < 5% poor

1,061

1.00

 

1,039

1.00

 

 5-29% poor

1,109

0.76

(0.64, 0.91)

991

0.68

(0.57, 0.82)

 ≥ 30% poor

1,121

0.62

(0.52, 0.74)

979

0.57

(0.48, 0.69)

Primary payer

 Uninsured

 239

1.00

 

 251

1.00

 

 Medicaid

 170

2.01

(1.31, 3.08)

 114

1.24

(0.78, 1.99)

 Medicare

1,573

2.48

(1.79, 3.43)

1,217

1.82

(1.34, 2.48)

 Private

1,309

2.78

(2.02, 3.83)

1,427

2.36

(1.76, 3.16)

Full models

Neighborhood poverty

 < 5% poor

1,061

1.00

 

1,039

1.00

 

 5-29% poor

1,109

1.07

(0.78, 1.48)

 991

0.70

(0.58, 0.84)

 ≥ 30% poor

1,121

1.25

(0.71, 2.18)

 979

0.62

(0.52, 0.75)

Primary payer

 Uninsured

239

1.00

 

 251

1.00

 

 Medicaid

170

2.40

(1.55, 3.73)

 114

1.33

(0.83, 2.12)

 Medicare

1,573

3.93

(2.33, 6.64)

1,217

1.79

(1.31, 2.44)

 Private

1,309

3.66

(2.36, 5.67)

1,427

2.19

(1.63, 2.93)

Poverty by payer

3,291

0.87

(0.78, 0.98)

   Null interaction removed

  

Poverty by payer interaction among women

 

> 30% poor

5-29% poor

< 5% poor

 

No.a

OR

(95% CI)

No.a

OR

(95% CI)

No.a

OR

(95% CI)

Primary payer

 Uninsured

105

1.00

 

74

1.00

 

60

1.00

 

 Medicaid

110

1.60

(0.90, 2.84)

48

1.83

(0.82, 4.07)

12

5.94

(1.50, 23.54)

 Medicare

587

1.68

(1.03, 2.74)

549

2.65

(1.48, 4.75)

437

4.69

(2.30, 9.57)

 Private

319

1.92

(1.18, 3.13)

438

2.61

(1.47, 4.64)

552

5.03

(2.51, 10.08)

  1. Notes. OR = odds ratio, CI = confidence interval. All effects were age-adjusted across these categories: 25–59, 60–69, 70–79 and 80 or older. After age, poverty and payer were accounted for, place (large urban, smaller urban, rural) did not enter the full models for women or men.
  2. a Number of incident colon cancer cases.