Table 2.
Differences in Demographic and Clinical Characteristics Between Patients With (n= 110) and Without (n= 280) Breast Pain
| Characteristic | No pain | Pain | Statistic and p-value |
|---|---|---|---|
| mean (SD) | mean (SD) | ||
| Age (years) | 56.5 (11.8) | 50.9 (9.8) | t= 4.81; p< 0.001 |
| Education (years) | 15.8 (2.7) | 15.4 (2.6) | t= 1.42; p= 0.16 |
| Self-administered Comorbidity Questionnaire score | 4.3 (2.8) | 4.2 (3.1) | t= 0.40; p= 0.69 |
| Karnofsky Performance Status score | 94.0 (10.3) | 90.9 (10.1) | t= 2.66; p= 0.008 |
| Number biopsies in past year | 1.5 (0.8) | 1.6 (0.8) | U= 12887.0, p< 0.01 |
| % (N) | % (N) | ||
| Married | 41.9 (117) | 43.0 (46) | FE; p= 0.91 |
| Employed | 48.4 (134) | 50.0 (55) | FE; p= 0.82 |
| Lives alone | 24.1 (67) | 25.2 (27) | FE; p= 0.90 |
| Ethnicity White Black/African American Asian/Pacific Islander Hispanic and Mixed Ethnic Background |
68.1 (190) 7.2 (20) 11.8 (33) 12.9 (36) |
55.0 (60) 15.6 (17) 15.6 (17) 13.8 (15) |
χ2= 8.82; p=0.03 |
| Stage at diagnosis 0 I IIA, IIB IIIA, IIIB, IIIC, IV |
19.3 (54) 38.9 (109) 34.6 (97) 7.1(20) |
17.3 (19) 33.6 (37) 37.3 (41) 11.8 (13) |
KW; 0.40 |
| Estrogen receptor positive | 77.5 (213) | 76.1 (83) | FE; p= 0.79 |
| Progesterone receptor positive | 69.3 (194) | 72.5 (70) | FE; p= 0.62 |
| Her2 neu positive | 16.1 (40) | 16.7 (17) | FE; p=0.88 |
| Post menopausal* | 67.9 (186) | 53.8 (57) | FE; p= 0.012 |
| Received neoadjuvant chemotherapy | 21.1 (59) | 17.3 (19) | FE; p=0.48 |
| Mastitis* | 11.6 (32) | 14.0 (15) | FE; p= 0.49 |
| Fibrocystic or cystic breast disease* | 17.8 (48) | 22.9 (24) | FE; p= 0.31 |
| History of breast feeding* | 49.6 (138) | 39.1 (43) | FE; p= 0.07 |
| Injury to affected arm* | 26.1 (72) | 20.2 (22) | FE; p= 0.24 |
| Injury to affected hand* | 22.3 (62) | 27.4 (29) | FE; p= 0.35 |
| Non-cancer surgery on the affected breast* | 12.9 (36) | 16.5 (18) | FE; p= 0.41 |
| Non-cancer surgery on the affected arm* | 6.1 (17) | 6.5 (7) | FE; p= 1.00 |
| Non-cancer surgery on the affected hand* | 8.7 (24) | 8.3 (9) | FE; p= 1.00 |
Abbreviations: FE = Fisher Exact test, KW = Kruskal-Wallis, U = Mann Whitney U test
*
Percentage of patients (N) who self-reported this condition