1Department of Radiation Oncology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
2Medical Research Collaborating Center, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
3Sunflower Center of Southern Gyeonggi for Women and Children Victims of Violence, Suwon, Korea
4Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam, Korea
5Department of Radiation Oncology and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
Copyright © 2025 by the Korean Cancer Association
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Ethical Statement
All participants were provided with a thorough explanation of the study and voluntarily signed an informed consent form prior to participation. This study protocol was approved by the Institutional Review Board of Seoul National University Bundang Hospital (IRB No. B-2106-690-301).
Author Contributions
Conceived and designed the analysis: Ryu H, Kim JH, Kim IA.
Collected the data: Ryu H, You SN, Kim B, Kim JH, Kim IA.
Contributed data or analysis tools: Ryu H, You SN, Oh S, Kim B, Kim JH, Kim IA.
Performed the analysis: Ryu H, You SN, Oh S, Kim B, Kim JH, Kim IA.
Wrote the paper: Ryu H, Kim JH, Kim IA.
Funding acquisition: Kim IA.
Conflict of Interest
Conflict of interest relevant to this article was not reported.
Funding
This work was supported by grants from the National Research Foundation of Korea (No. 2023R1A2C3003782) to In Ah Kim.
Characteristic | Control (n=44) | MBSH (n=40) | p-value |
---|---|---|---|
Age group (yr) | |||
< 40 | 3 (6.8) | 7 (17.5) | 0.157 |
40-49 | 23 (52.3) | 23 (57.5) | |
≥ 50 | 18 (40.9) | 10 (25.0) | |
Education | |||
High school | 15 (34.1) | 8 (20.0) | 0.230 |
College | 29 (65.9) | 32 (80.0) | |
Religion | |||
Yes | 23 (52.3) | 27 (67.5) | 0.231 |
No | 21 (47.7) | 13 (32.5) | |
Marital status | |||
Married | 35 (79.5) | 27 (67.5) | 0.315 |
Unmarried | 9 (20.5) | 13 (32.5) | |
Menopausal status | |||
Pre | 31 (70.5) | 34 (85.0) | 0.183 |
Post | 13 (29.5) | 6 (15.0) | |
Psychiatric history | |||
Yes | 42 (95.5) | 36 (90.0) | 0.418 |
No | 2 (4.5) | 4 (10.0) | |
Time since diagnosis (mo) | |||
0-6 | 31 (70.5) | 34 (85.0) | 0.183 |
> 6 | 13 (29.5) | 6 (15.0) | |
Clinical stage | |||
0 | 7 (15.9) | 4 (10.0) | 0.581 |
1 | 20 (45.5) | 15 (37.5) | |
2 | 12 (27.3) | 16 (40.0) | |
3 | 5 (11.4) | 5 (12.5) | |
Luminal type | |||
A | 20 (45.5) | 16 (41.0) | 0.706 |
B | 16 (36.4) | 15 (38.5) | |
HER2 | 3 (6.8) | 1 (2.6) | |
TNBC | 5 (11.4) | 7 (17.9) | |
Bilateral | |||
No | 44 (100) | 38 (95.0) | 0.224 |
Yes | 0 | 2 (5.0) | |
Type of surgery | |||
Breast conserving | 29 (65.9) | 29 (72.5) | 0.677 |
Total mastectomy | 15 (34.1) | 11 (27.5) | |
Axilla surgery | |||
None | 10 (22.7) | 10 (25.0) | 0.658 |
Sentinel node biopsy | 19 (43.2) | 20 (50.0) | |
ALND | 15 (34.1) | 10 (25.0) | |
Reconstruction | |||
No | 32 (72.7) | 33 (82.5) | 0.419 |
Yes | 12 (27.3) | 7 (17.5) | |
Chemotherapy | |||
None | 22 (50.0) | 16 (40.0) | 0.607 |
Adjuvant | 11 (25.0) | 10 (25.0) | |
Adj and neoadjuvant | 9 (20.5) | 13 (32.5) | |
Neoadjuvant | 2 (4.5) | 1 (2.5) | |
Hormonal therapy | |||
No | 9 (20.5) | 8 (20.0) | > 0.99 |
Yes | 35 (79.5) | 32 (80.0) | |
Herceptin therapy | |||
No | 36 (81.8) | 34 (85.0) | 0.922 |
Yes | 8 (18.2) | 6 (15.0) | |
RT field | |||
Breast | 22 (50.0) | 24 (60.0) | 0.262 |
Breast and regional node | 22 (50.0) | 16 (40.0) | |
RT dose (Gy) | |||
42.5-52.56 | 27 (61.4) | 28 (70.0) | 0.406 |
55-60 | 17 (38.6) | 12 (30.0) | |
RT fraction number | |||
16-21 | 33 (75.0) | 36 (90.0) | 0.073 |
25-30 | 11 (25.0) | 4 (10.0) |
Outcome | Control (n=44) |
MBSH (n=40) |
Two-way repeated measure ANOVA |
||||||
---|---|---|---|---|---|---|---|---|---|
Pre | Post | p-value | Pre | Post | p-value | Group (F, P) | Time (F, P) | Time×Group (F, P) | |
Perceived Stress Scale | 17.4±6.6 | 16.7±7.2 | 0.171 | 16.4±6.2 | 13.6±4.5 | 0.001* | 2.887, 0.093 | 9.249, 0.003* | 3.099, 0.082 |
Hospital Anxiety Depression | 13.7±7.5 | 13.0±7.5 | 0.685 | 14.0±5.9 | 11.0±5.1 | < 0.001* | 0.413, 0.522 | 9.690, 0.003* | 3.640, 0.060 |
Depression | 6.5±4.2 | 6.2±3.7 | 0.534 | 6.7±3.5 | 5.2±2.7 | 0.007* | 0.267, 0.607 | 9.799, 0.002* | 4.306, 0.041* |
Anxiety | 7.2±3.9 | 6.9±4.3 | 0.793 | 7.2±3.1 | 5.9±3.1 | 0.001* | 0.446, 0.506 | 5.921, 0.017* | 1.847, 0.178 |
Insomnia Severity Index | 8.7±4.6 | 9.1±4.9 | 1.000 | 9.4±4.8 | 8.9±5.0 | 0.389 | 0.079, 0.780 | 0.009, 0.926 | 1.077, 0.302 |
Quality of life | 31.1±13.3 | 31.9±14.2 | 0.530 | 35.3±12.3 | 37.7±12.6 | 0.257 | 3.633, 0.060 | 2.032, 0.158 | 0.476, 0.492 |
Emotional QOL | 6.6±3.7 | 7.0±4.0 | 0.412 | 7.5±2.7 | 8.9±3.1 | 0.009* | 4.244, 0.043* | 6.561, 0.012* | 1.532, 0.219 |
Social QOL | 9.6±5.1 | 10.3±5.3 | 0.268 | 11.4±5.1 | 11.8±4.9 | 0.538 | 2.454, 0.121 | 1.493, 0.225 | 0.101, 0.751 |
Psychologic QOL | 14.9±6.2 | 14.6±6.3 | 0.710 | 16.4±5.7 | 17.1±5.9 | 0.646 | 2.935, 0.090 | 0.153, 0.696 | 0.771, 0.382 |
Mindfulness | 26.4±5.4 | 27.0±5.1 | 0.252 | 26.9±4.9 | 27.7±6.0 | 0.338 | 0.343, 0.560 | 1.947, 0.167 | 0.025, 0.875 |
Awareness | 10.1±2.2 | 10.4±2.1 | 0.351 | 10.1±2.3 | 10.7±2.9 | 0.196 | 0.095, 0.759 | 4.017, 0.048* | 0.372, 0.543 |
Attention | 11.1±2.6 | 11.3±2.5 | 0.449 | 11.7±2.4 | 11.4±2.8 | 0.567 | 0.493, 0.484 | 0.000, 0.996 | 0.749, 0.389 |
Acceptance | 5.2±1.6 | 5.3±1.2 | 0.913 | 5.2±1.2 | 5.6±1.3 | 0.038* | 0.258, 0.613 | 2.384, 0.126 | 1.392, 0.241 |
Mini-MAC | 70.0±6.3 | 67.8±6.3 | 0.010 | 69.3±7.2 | 66.8±6.1 | 0.011* | 0.428, 0.515 | 12.410, 0.001 | 0.021, 0.885 |
Helplessness-hopelessness | 13.5±4.5 | 12.6±3.9 | 0.091 | 12.3±3.6 | 11.5±3.7 | 0.108 | 2.418, 0.124 | 4.549, 0.036* | 0.040, 0.842 |
Anxiety preoccupation | 20.5±4.9 | 19.7±4.3 | 0.115 | 19.4±4.8 | 17.8±4.8 | 0.001* | 2.501, 0.118 | 11.670, 0.001* | 1.342, 0.250 |
Cognitive avoidance | 26.0±3.8 | 25.6±4.3 | 0.201 | 26.6±4.0 | 27.2±4.9 | 0.438 | 1.695, 0.197 | 0.065, 0.800 | 1.926, 0.169 |
Positive attitude | 10.1±2.5 | 10.1±2.3 | 0.814 | 9.0±2.6 | 9.7±2.7 | 0.196 | 2.604, 0.110 | 2.357, 0.129 | 1.677, 0.199 |
Values are presented as number (%). ALND, axillary lymph node dissection; HER2, human epidermal growth factor receptor 2; MBSH, mindfulness-based self-help; RT, radiotherapy; TNBC, triple negative breast cancer.
Values are presented as mean±standard deviation. MBSH, mindfulness-based self-help; mini-MAC, mini-mental adjustment to cancer; QOL, quality of life. An asterisk (*) indicates statistical significance with a p-value less than 0.05.