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Table 3 Baseline demographic and treatment characteristics for the study groups of the PAM study

From: Effect of physical exercise on cognitive function after chemotherapy in patients with breast cancer: a randomized controlled trial (PAM study)

  Intervention group (n = 91) Control group (n = 90)
Age (years) 52.1 (8.6) 52.5 (8.7)
Education level (n (%))
 High 42 (46.2) 36 (40.0)
 Middle 49 (53.8) 52 (57.8)
 Low 0 (0) 0 (0)
 Missing 0 (0) 2 (2.2)
Employment (n (%))
 Yes (full/part-time) 51 (56.0) 47 (52.2)
 Temporarily work disabled 6 (6.6) 8(8.9)
  < 100% 3 (3.3) 1 (1.1)
  100% 3 (3.3) 7 (7.8)
 Work disabled 14 (15.4) 15 (16.7)
  < 35% 0 (0) 0 (0)
  35–80% 0 (0) 5 (5.6)
  > 80% 14 (15.4) 10 (11.1)
 No 17 (18.7) 18 (20)
 Missing 3 (3.3) 2 (2.2)
Physical fitness (VO2peak in ml/min/kg) 23.6 (4.7) 24.9 (6.2)
Menopausal status (n (%))
 Pre/peri 10 (11.0) 11 (12.2)
 Post 81 (89.0) 79 (87.8)
Age of menopause (years) 47.4 (6.4) 47.0 (5.5)
Time since diagnosis (years)a 3.1 (0.7) 3.1 (0.6)
Tumor grade (n (%))
 I 11 (12.1) 8 (8.9)
 II 36 (39.5) 38 (42.2)
 III 31 (34.1) 34 (37.7)
 Unknown 13 (14.3) 10 (11.2)
Surgery (n (%))a
 Yes 91 (100) 89 (98.9)
 Unknown   1 (1.1)
Chemotherapy timing (n (%))
 Neoadjuvant 43 (47.3) 43 (47.8)
 Adjuvant 44 (48.3) 42 (46.7)
 Both 3 (3.3) 3 (3.3)
 Unknown 1 (1.1) 2 (2.2)
Time since completion chemotherapy (years)a 2.6 (0.7) 2.6 (0.6)
Radiation (n (%))
 Yes 71 (78.0) 65 (72.2)
 No 20 (22.0) 24 (26.7)
  Unknown   1 (1.1)
Targeted therapy (n (%))
 Yes 19 (20.9) 19 (21.1)
 No 72 (79.1) 69 (76.7)
 Unknown   2 (2.2)
Endocrine therapy (n (%))
 Yes 57 (62.6) 54 (60.0)
 No 34 (37.4) 36 (40.0)
Medication use (n (%))
 Cardiovascular 18 (19.8) 19 (21.1)
 Anti-diabetic 2 (2.2) 2 (2.2)
 Psychotropic 30 (33.0) 17 (18.9)
 Pain medication 13 (14.3) 15 (16.7)
  1. Values indicate mean (SD) unless indicated otherwise
  2. aFor time since diagnosis, average years were based on 83 intervention patients and 84 control patients. For time since completion chemotherapy, average years were based on 85 intervention patients and 79 control patients