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Table 7 logistic regression results for main effects and interactions of neighborhood poverty and primary payer by gender on receipt of optimum treatment a among colon cancer patients with stage III disease

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.b

OR

(95%CI)

No.b

OR

(95%CI)

Single predictor models

Neighborhood poverty

 < 5% poor

133

1.00

 

133

1.00

 

 5-29% poor

131

0.53

(0.32, 0.88)

115

0.98

(0.58, 1.66)

 ≥ 30% poor

109

0.55

(0.32, 0.95)

103

0.88

(0.51, 1.50)

Primary payer

 Uninsured

 29

1.00

 

 27

1.00

 

 Medicaid

 24

0.84

(0.26, 2.72)

 15

0.67

(0.19, 2.42)

 Medicare

131

0.52

(0.21, 1.30)

119

1.47

(0.59, 3.66)

 Private

189

0.86

(0.37, 2.00)

190

1.06

(0.46, 2.44)

Full models

Neighborhood poverty

 < 5% poor

133

1.00

 

133

1.00

 

 5-29% poor

131

0.53

(0.32, 0.89)

115

0.28

(0.10, 0.77)

 ≥ 30% poor

109

0.55

(0.31, 0.98)

103

0.08

(0.01, 0.47)

Primary payer

 Uninsured

 29

1.00

 

 27

1.00

 

 Medicaid

 24

0.82

(0.25, 2.68)

 15

0.41

(0.10, 1.70)

 Medicare

131

0.47

(0.19, 1.21)

119

0.22*

(0.04, 1.20)

 Private

189

0.72

(0.30, 1.72)

190

0.27*

(0.07, 1.06)

Poverty by payer

Null Interaction removed

351

1.75

(1.19, 2.57)

Poverty by payer interaction among men

 

> 30% poor

< 30% poor

No.b

OR

(95% CI)

No.b

OR

(95% CI)

Primary payer

 Uninsured

10

 1.00

 

17

1.00

 

 Medicaid

 9

 3.03

(0.43, 21.33)

 6

0.22

(0.03, 1.69)

 Medicare

37

13.33

(2.42, 73.50)

82

0.40

(0.10, 1.60)

 Private

47

 3.69*

(0.81, 16.84)

143

0.41

(0.11, 1.51)

  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.
  2. a Optimum treatment: received colon cancer-directed surgery within 30 days of diagnosis and received adjuvant chemotherapy within 45 days of surgery.
  3. b Number of incident colon cancer cases.
  4. * p < .10.