Table 7.
Logistic regression main effects and interactions of neighborhood poverty and primary payer on receipt of initial and adjuvant therapies among women with node negative breast cancer
| |
Radiation therapya |
Chemotherapy |
Hormone therapyb |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Predictor variables | Sample | OR | (95% CI) | Sample | OR | (95% CI) | Sample | OR | (95% CI) |
| |
Single predictor models |
||||||||
| Neighborhood poverty | |||||||||
| < 5% poor |
877 |
1.00 |
|
1,327 |
1.00 |
|
932 |
1.00 |
|
| 5-29% poor |
762 |
0.80* |
(0.63, 1.01) |
1,232 |
1.18 |
(0.94, 1.46) |
756 |
0.77 |
(0.63, 0.93) |
| ≥ 30% poor |
611 |
0.63 |
(0.49, 0.81) |
1,113 |
0.96 |
(0.76, 1.22) |
611 |
0.70 |
(0.56, 0.86) |
| Primary payer | |||||||||
| All others |
980 |
1.00 |
|
1,627 |
1.00 |
|
1,002 |
1.00 |
|
| Private |
1,270 |
1.40 |
(1.12, 1.75) |
2,045 |
1.00 |
(0.81, 1.24) |
1,297 |
1.38 |
(1.14, 1.66) |
| |
Full models |
||||||||
| Neighborhood poverty | |||||||||
| < 5% poor |
877 |
1.00 |
|
1,327 |
1.00 |
|
932 |
1.00 |
|
| 5-29% poor |
762 |
0.62 |
(0.44, 0.87) |
1,232 |
1.16 |
(0.93, 1.44) |
756 |
0.78 |
(0.64, 0.95) |
| ≥ 30% poor |
611 |
0.51 |
(0.37, 0.72) |
1,113 |
0.77 |
(0.54, 1.10) |
611 |
0.73 |
(0.59, 0.90) |
| Primary payer | |||||||||
| All others |
980 |
1.00 |
|
1,627 |
1.00 |
|
1,002 |
1.00 |
|
| Private |
1,270 |
0.97 |
(0.68, 1.40) |
2,045 |
0.87 |
(0.66, 1.13) |
1,297 |
1.32 |
(1.09, 1.60) |
| Poverty by payer |
2,250 |
1.61 |
(1.05, 2.46) |
3,672 |
1.43* |
(0.93, 2.19) |
2,299 |
0.98c |
(0.79, 1.21) |
| |
Poverty by payer interaction on receipt of adjuvant radiation therapy |
||||||||
| |
|
> 5% poor |
< 5% poor |
|
|
||||
| |
|
Sample |
OR |
(95% CI) |
Sample |
OR |
(95% CI) |
|
|
| Primary payer | |||||||||
| All others |
|
651 |
1.00 |
|
329 |
1.00 |
|
|
|
| Private |
|
722 |
1.56 |
(1.19, 2.03) |
548 |
1.06 |
(0.70, 1.61) |
|
|
| |
Poverty by payer interaction on receipt of chemotherapy |
||||||||
| |
|
> 30% poor |
< 30% poor |
|
|
||||
| |
|
Sample |
OR |
(95% CI) |
Sample |
OR |
(95% CI) |
|
|
| Primary payer | |||||||||
| All others |
|
639 |
1.00 |
|
988 |
1.00 |
|
|
|
| Private | 474 | 1.39* | (0.94, 2.06) | 1,571 | 0.86 | (0.65, 1.13) | |||
Notes. OR = odds ratio, CI = confidence interval. All effects were age and tumor size-adjusted across these categories: 25–44, 45–54, 55–64, 65–74 and 75 or older; and less than 10, 10–19 and 20–50 mm or larger. Bolded ORs were statistically significant at p < .05.
a Among women who received breast conserving surgery. b Among women with hormone receptor positive tumors.
c Null interaction was removed from the full model. *p < .10.