TABLE 1.
Participant Characteristics—CBCS Phases I and II (n = 1,808)
| Latent Class Assignment |
||||
|---|---|---|---|---|
| Characteristic | Overall (n = 1,808) n (%) | HBD (n = 916) n (%) | HB-UD/UBD (n = 892) n (%) | HB-UD/UBD Versus HBD OR (95% CI)a |
| Race | ||||
| Black | 788 (44) | 367 (40) | 421 (47) | 1.00 |
| White | 1,020 (56) | 549 (60) | 471 (53) | 0.75 (0.62, 0.90) |
| Caucasian | 995 (98) | 537 (98) | 458 (97) | |
| Other | 25 (2.4) | 12 (2.2) | 13 (2.8) | |
| Age at diagnosis (years) | ||||
| <50 | 976 (54) | 443 (48) | 533 (60) | 1.00 |
| ≥50 | 832 (46) | 473 (52) | 359 (40) | 0.63 (0.52, 0.76) |
| Education | ||||
| <High school | 330 (18) | 140 (15) | 190 (21) | 1.00 |
| High school or GED | 669 (37) | 307 (34) | 362 (41) | 0.87 (0.67, 1.1) |
| ≥College | 809 (45) | 469 (51) | 340 (38) | 0.53 (0.41, 0.69) |
| Marital status | ||||
| Unmarried | 758 (42) | 338 (37) | 420 (47) | 1.00 |
| Married | 1,050 (58) | 578 (63) | 472 (53) | 0.66 (0.55, 0.79) |
| BMI at diagnosis (kg/m2) | ||||
| <25 | 515 (29) | 267 (30) | 248 (28) | 1.00 |
| 25–29 | 626 (35) | 324 (36) | 302 (35) | 1.0 (0.80, 1.3) |
| ≥30 | 627 (35) | 304 (34) | 323 (37) | 1.1 (0.91, 1.4) |
| Stage | ||||
| I/II | 1,478 (87) | 748 (87) | 730 (87) | 1.00 |
| III/IV | 219 (13) | 110 (13) | 109 (13) | 1.0 (0.76, 1.3) |
| Gradeb | ||||
| I/II | 427 (57) | 224 (58) | 203 (56) | 1.00 |
| III | 318 (43) | 161 (42) | 157 (44) | 1.1 (0.81, 1.4) |
| Tumor size (cm) | ||||
| ≤2.0 | 909 (54) | 479 (56) | 430 (51) | 1.00 |
| >2.0 | 786 (46) | 379 (44) | 407 (49) | 1.2 (0.99, 1.4) |
| Node status | ||||
| Negative | 1,123 (64) | 577 (65) | 546 (63) | 1.00 |
| Positive | 638 (36) | 315 (35) | 323 (37) | 1.1 (0.89, 1.3) |
| ER status | ||||
| ER− | 727 (43) | 358 (42) | 369 (45) | 1.00 |
| ER+ | 959 (57) | 499 (58) | 460 (55) | 0.89 (0.74, 1.1) |
CBCS participants were diagnosed with invasive breast cancer from 1993 to 1996 (Phase I) and 1996 to 2000 (Phase II) and followed-up for vital status through 31 December 2011.
a
ORs and 95% CIs were derived from bivariate logistic regression models.
b
Grade not available for CBCS Phase II.
GED indicates general equivalency diploma; HBD, healthy behavior and diet; HB-UD, healthy behavior and unhealthy diet; OR, odds ratios; UBD, unhealthy behavior and diet.