Table 1.
Clinical and Demographic Characteristics of the Study Population
| Age Mean (SD) | Intervention Group (n = 50) | Control Group (n = 50) | P | |||
|---|---|---|---|---|---|---|
| 59 (9) | 61 (8) | 0.22* | ||||
| n = | (%) | n = | (%) | |||
| Tumor stage1 | ||||||
| T1 | 27 | (54) | 24 | (48) | 0.18ˆ | |
| T2 | 8 | (16) | 8 | (16) | ||
| T3 | 0 | (0) | 1 | (2) | ||
| Tis | 3 | (6) | 10 | (20) | ||
| Unknown | 12 | (24) | 7 | (14) | ||
| Operation | ||||||
| Lumpectomy | 40 | (80) | 43 | (86) | 0.51ˆ | |
| Mastectomy | 9 | (18) | 7 | (14) | ||
| Bilateral2 | 1 | (2) | 0 | (0) | ||
| Chemotherapy | ||||||
| Yes | 21 | (42) | 15 | (30) | 0.34ˆ | |
| No | 27 | (54) | 34 | (68) | ||
| Unknown | 2 | (4) | 1 | (2) | ||
| Anti-hormone therapy | ||||||
| Yes | 31 | (62) | 18 | (36) | 0.02ˆ | |
| No | 18 | (36) | 32 | (64) | ||
| Unknown | 1 | (2) | 0 | (0) | ||
| Treatment | ||||||
| Radiotherapy only | 14 | (28) | 25 | (50) | 0.04ˆ | |
| Combination of treatments3 | 36 | (72) | 25 | (50) | ||
| Civil status# | ||||||
| Married/cohabiting | 42 | (86) | 38 | (76) | 0.22ˆ | |
| Single/widow | 7 | (14) | 12 | (24) | ||
| Education# | ||||||
| Primary school/High school | 15 | (31) | 12 | (24) | 0.36ˆ | |
| Blue collar/College | 32 | (65) | 32 | (64) | ||
| University | 1 | (2) | 4 | (8) | ||
| Unknown | 1 | (2) | 2 | (4) | ||
#
One missing patient in the intervention group.
*
P-value derived from an un-paired t-test.
ˆ
P-value derived from a chi squared test.
1
Tumor classification according to AJCC Cancer Staging Manual [21].
2
Bilateral= double-sided, here meaning that the patient had had a lumpectomy on one side and a mastectomy on the other side.
3
A combination of radiotherapy and chemotherapy and/or anti-hormone therapy.