Table 1.
Baseline Characteristics of Breast Cancer Enrollees and Final Breast Cancer Sample
| Variable | Study BC Enrollees n5391 |
Final BC Sample n5304 |
Pa |
|---|---|---|---|
| Age,b y | 54.8 (10.3) [25–88] | 54.8 (9.8) [25–88] | ns |
| Disease stage | .047 | ||
| 0 | 39 (10%) | 34 (11%) | |
| 1 | 196 (50%) | 158 (52%) | |
| 2 | 156 (40%) | 112 (37%) | |
| Mastectomyc | 60 (15%) | 39 (13%) | .017 |
| Immediate reconstruction | 16 (4%) | 11 (4%) | ns |
| Adjuvant treatment | .001 | ||
| RT only | 184 (42%) | 157 (52%) | |
| CT only | 43 (11%) | 27 (9%) | |
| CT+RT | 164 (47%) | 120 (39%) | |
| Education | ns | ||
| ≤High school graduate | 106 (27%) | 79 (26%) | |
| Some college | 118 (30%) | 94 (31%) | |
| ≥College graduate | 157 (40%) | 131 (43%) | |
| Annual household income | ns | ||
| <$20,000 | 32 (8%) | 25 (8%) | |
| $20,000–$59,999 | 140 (36%) | 112 (37%) | |
| $60,000–$99,999 | 112 (29%) | 93 (31%) | |
| ≥$100,000 | 71 (18%) | 50 (16%) | |
| Missing | 36 (9%) | 24 (8%) | |
| Obesed | 109 (29%) | 85 (27%) | ns |
| Postmenopausal | 236 (63%) | 186 (61%) | ns |
| Study site | ns | ||
| University of Kentucky | 134 (34%) | 112 (37%) | |
| Moffitt Cancer Center | 257 (66%) | 192 (63%) | |
| Married/Partnered | 277 (73%) | 224 (74%) | ns |
| Minority | 34 (9%) | 27 (9%) | ns |
| No. of physical comorbidities | ns | ||
| 0 | 265 (68%) | 203 (66%) | |
| 1 | 96 (24%) | 78 (26%) | |
| ≥2 | 30 (8%) | 23 (8%) |
BC indicates breast cancer; ns, not significant; RT, radiotherapy; CT, chemotherapy.
a
omparing study dropouts (n=87) and final sample (n=310).
b
Mean (SD, standard deviation from the mean) [Range].
c
Includes bilateral mastectomy or lumpectomy plus mastectomy.
d
Defined as ≥30 kg/m2