Table 1 Patients’ characteristics
Characteristic (mean) | n | Scapula alata | Odds ratio | 2P | |
|---|---|---|---|---|---|
Not present | Present | ||||
n = 106 | n = 13 | ||||
n (row%) | n (row%) | ||||
Age (mean 56.6) | Â | Â | Â | 4.8 | 0.009 |
 <50 years | 34 | 26 (76.5) | 8 (23.5) |  |  |
 > = 50 | 85 | 80 (94.1) | 5 (5.9) |  |  |
Weight pre-RT (mean 68.4) | Â | Â | Â | 4.3 | 0.071 |
 <70 kg | 70 | 59 (84.3) | 11 (15.7) |  |  |
 > = 70 | 49 | 47 (95.9) | 2 (4.1) |  |  |
Height (mean 1.62) | Â | Â | Â | 1.7 | 0.346 |
 <1.60 m | 33 | 28 (84.8) | 5 (15.2) |  |  |
 > = 1.60 | 86 | 78 (90.7) | 8 (9.3) |  |  |
Body mass index pre-RT (mean 25.9) | Â | Â | Â | 6.1 | 0.016 |
 <25 kg/m2 | 61 | 50 (82) | 11 (18) |  |  |
 > = 25 | 58 | 56 (96.6) | 2 (3.4) |  |  |
Arm symptoms pre-RT | Â | Â | Â | 0.8 | 0.726 |
 No | 86 | 76 (88.4) | 10 (11.6) |  |  |
 Yes | 22 | 19 (86.4) | 3 (13.6) |  |  |
 Missing | 11 | 11 (100) | 0 (0) |  |  |
Side of surgery is dominant arm | Â | Â | Â | 0.5 | 0.378 |
 No | 63 | 58 (92.1) | 5 (7.9) |  |  |
 Yes | 55 | 47 (85.5) | 8 (14.5) |  |  |
 Missing | 1 | 1 (100) | 0 (0) |  |  |
Breast surgery | Â | Â | Â | 2.3 | 0.221 |
 Mastectomy | 43 | 36 (83.7) | 7 (16.3) |  |  |
 Breast-conserving | 76 | 70 (92.1) | 6 (7.9) |  |  |
Axillary surgery | Â | Â | Â | 6.1 | 0.005 |
 Axillary dissection | 47 | 37 (78.7) | 10 (21.3) |  |  |
 Sentinel node | 72 | 69 (95.8) | 3 (4.2) |  |  |
Number of nodes examined (mean 8.2) | Â | Â | Â | 0.3 | 0.133 |
 <10 | 77 | 72 (93.5) | 5 (6.5) |  |  |
 > = 10 | 42 | 34 (81) | 8 (19) |  |  |
Chemotherapy | Â | Â | Â | 0.4 | 0.257 |
 No | 64 | 59 (92.2) | 5 (7.8) |  |  |
 Yes | 55 | 47 (85.5) | 8 (14.5) |  |  |
Type of RT | Â | Â | Â | 0.5 | 0.387 |
 Short-course IGRT | 61 | 56 (91.8) | 5 (8.2) |  |  |
 Conventional RT | 58 | 50 (86.2) | 8 (13.8) |  |  |
RT regional nodes | Â | Â | Â | 0.6 | 0.108 |
 No | 82 | 76 (92.7) | 6 (7.3) |  |  |
 Yes | 37 | 30 (81.1) | 7 (18.9) |  |  |