Table 2 Multi-level random effects logistic regression model of individual and area-level factors associated with aggressive histological grade at diagnosis for breast cancer among white and black women in Maryland, 1992–2003 (34,310 women in 3568 census blockgroups, Maryland cancer registry)
Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Fixed Effects | O.R. | 95% CI | O.R. | 95% CI | O.R. | 95% CI | O.R. | 95% CI | O.R. | 95% CI |
Intercept | 0.71 | (0.70,0.74) | 0.72 | (0.70,0.74) | 0.72 | (0.70,0.74) | 0.64 | (0.56,0.73) | 0.63 | (0.53,0.71) |
Individual Level | ||||||||||
Age | 0.98 | (0.98,0.98) | 0.98 | (0.98,0.98) | 0.98 | (0.98,0.98) | 0.98 | (0.98,0.98) | 0.98 | (0.98,0.98) |
Black Race | 1.69 | (1.60,1.78) | 1.65 | (1.56,1.74) | 1.69 | (1.59,1.79) | 1.73 | (1.62,1.85) | 1.71 | (1.59,1.83) |
Year of Diagnosis | 0.95 | (0.95,0.96) | 0.96 | (0.95,0.96) | 0.96 | (0.95,0.96) | 0.96 | (0.95,0.96) | 0.96 | (0.95,0.96) |
Census Blockgroup Level | ||||||||||
Social Class | 0.96 | (0.94,0.99) | 0.94 | (0.92,0.97) | 0.96 | (0.93,0.99) | 0.97 | (0.93,1.00) | ||
Class*Black Race | 1.08 | (1.03,1.15) | 1.06 | (1.01.1.13) | 1.06 | (0.99,1.12) | ||||
Tobacco Spending (per $100) | 1.01 | (1.00,1.03) | 1.02 | (1.00,1.04) | ||||||
Tobacco*Black Race | 0.98 | (0.94,1.02) | ||||||||
Random Effects | Estimate | P Value | Estimate | P Value | Estimate | P Value | Estimate | P Value | Estimate | P Value |
Blockgroup Level Variance | 0.01685 | <0.0001 | 0.01505 | <0.0001 | 0.01505 | <0.0001 | 0.01421 | <0.0001 | 0.01422 | <0.0001 |
Residual ICC | 0.00486 | 0.04 | 0.00456 | 0.05 | 0.00456 | 0.05 | 0.00430 | 0.06 | 0.00431 | 0.06 |