TABLE 3.

Logistic Regression Results for Main Effects and Interactions of Neighborhood Income and Place: Toronto, ON, and San Francisco, CA, 1996–2006

Predictor Variables	OR (95% CI)
Significant main effects
Age at diagnosis	0.62 (0.56, 0.69)
Stage at diagnosisa	0.20 (0.16, 0.24)
Gender (female advantaged)	1.32 (1.06, 1.64)
Received surgery	3.40 (1.89, 6.12)
> 15 regional lymph nodes examined	1.57 (1.16, 2.13)
Received chemotherapy	1.53 (1.04, 2.25)
Significant interaction effects
Neighborhood income by place	2.57 (1.47, 4.49)
Neighborhood income by place by stage at diagnosis	0.67 (0.52, 0.88)
Neighborhood income by place by ≥ 15 nodes examined	0.20 (0.05, 0.72)
Nonsignificant main effects
Place	0.94 (0.68, 1.29)
Neighborhood income	0.94 (0.73, 1.02)
Waited ≥ 30 d after diagnosis for surgery	0.84 (0.59, 1.21)
Waited ≥ 60 d after surgery for chemotherapy	0.90 (0.75, 1.06)

Note. CI = confidence interval; OR = odds ratio. Total sample from both cities was n = 1944.

^aAmerican Joint Committee on Cancer staging.³⁴