Table 8.
Logistic regression main effects and interactions of neighborhood poverty and primary payer on receipt of initial and adjuvant therapies among women with non-distally metastasized, node positive breast cancer
| |
Radiation therapy |
Chemotherapya |
Hormone therapyb |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Predictor variables | Sample | OR | (95% CI) | Sample | OR | (95% CI) | Sample | OR | (95% CI) |
| |
Single predictor models |
||||||||
| Neighborhood poverty | |||||||||
| < 5% poor |
497 |
1.00 |
|
364 |
1.00 |
|
364 |
1.00 |
|
| 5-29% poor |
525 |
0.82 |
(0.64, 1.05) |
321 |
1.01 |
(0.73, 1.40) |
333 |
1.19 |
(0.88, 1.62) |
| ≥ 30% poor |
568 |
0.75 |
(0.59, 0.96) |
393 |
0.78 |
(0.56, 1.07) |
335 |
0.90 |
(0.66, 1.23) |
| Primary payer | |||||||||
| Uninsured |
174 |
1.00 |
|
107 |
1.00 |
|
103 |
1.00 |
|
| Any insurance |
1,416 |
0.94 |
(0.76, 1.16) |
931 |
1.12 |
(0.72, 1.75) |
929 |
0.98 |
(0.64, 1.50) |
| |
Full models |
||||||||
| Neighborhood poverty | |||||||||
| < 5% poor |
497 |
1.00 |
|
324 |
1.00 |
|
364 |
1.00 |
|
| 5-29% poor |
525 |
0.82 |
(0.63, 1.05) |
321 |
1.07 |
(0.77, 1.49) |
333 |
1.32* |
(0.96, 1.82) |
| ≥ 30% poor |
568 |
0.73 |
(0.57, 0.93) |
393 |
0.86 |
(0.62, 1.21) |
335 |
0.90 |
(0.66, 1.22) |
| Primary payer | |||||||||
| Uninsured |
174 |
1.00 |
|
107 |
1.00 |
|
103 |
1.00 |
|
| Any insurance |
1,416 |
0.87 |
(0.70, 1.09) |
931 |
0.64 |
(0.32, 1.29) |
929 |
0.68 |
(0.41, 1.15) |
| Poverty by payer |
1,590 |
0.73c |
(0.48, 1.12) |
1,038 |
0.59* |
(0.34, 1.01) |
1,032 |
0.33 |
(0.13, 0.82) |
| |
Poverty by payer interaction on receipt of chemotherapy |
||||||||
| |
|
> 5% poor |
|
< 5% poor |
|
||||
| |
|
Sample |
OR |
(95% CI) |
|
Sample |
OR |
(95% CI) |
|
| Primary payer | |||||||||
| Uninsured |
|
75 |
1.00 |
|
|
32 |
1.00 |
|
|
| Any insurance |
|
639 |
1.63* |
(0.91, 2.90) |
|
292 |
0.55 |
(0.25, 1.17) |
|
| |
Poverty by payer interaction on receipt of hormone therapy |
||||||||
| |
> 30% poor |
5-29% poor |
< 5% poor |
||||||
| |
Sample |
OR |
(95% CI) |
Sample |
OR |
(95% CI) |
Sample |
OR |
(95% CI) |
| Primary payer | |||||||||
| Uninsured |
36 |
1.00 |
|
32 |
1.00 |
|
35 |
1.00 |
|
| Any insurance | 299 | 0.72 | (0.34, 1.52) | 301 | 2.16 | (1.00, 4.69) | 329 | 0.59 | (0.28, 1.26) |
Notes. OR = odds ratio, CI = confidence interval. Effects on radiation and hormone therapies were age and tumor size-adjusted and effects on chemotherapy were adjusted for age and the receipt of radiation therapy across these categories: 25–44, 45–54, 55–64, 65–74 and 75 or older; less than 10, 10–19 and 20–50 mm or larger; and received radiation therapy or not. Bolded ORs were statistically significant at p < .05.
a Among women who received mastectomies. b Among women with hormone receptor positive tumors.
c Null interaction was removed from the full model. *p < .10.