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Table 1 Characteristics of study participants according to physical activity levels

From: The association between physical activity and health-related quality of life among breast cancer survivors

  Physical Activity (MET-hours per week)
All (n = 231) Tertile 1 (n = 77) Tertile 2 (n = 77) Tertile 3 (n = 77) P valuea)
Physical activity (METs-hour per week)b 33.66 (29.86) 7.19 (5.29) 26.96 (6.43) 66.83 (27.56) <0.001
Age (year)b 48.07 (8.36) 46.94 (7.91) 49.16 (8.89) 48.12 (8.22) 0.31
Body Mass Index (kg/m2)b 23.20 (3.13) 23.62 (3.86) 23.07 (2.97) 22.92 (2.38) 0.55
Energy intake (kcal/day)b 1778.30 (402.76) 1693.07 (363.22) 1805.71 (398.39) 1825.96 (432.12) 0.16
Dietary supplement useb
 yes 151 (65.37) 48 (62.34) 55 (71.43) 48 (62.34) 0.39
 no 80 (34.63) 29 (37.66) 22 (28.57) 29 (37.66)  
Time since surgeryb
 6 month - 1 year 32 (13.85) 12 (15.58) 8 (10.39) 12 (15.58) 0.70
 1 year - 5 years 172 (74.46) 58 (75.32) 60 (77.92) 54 (70.13)  
 5 years ≤ 27 (11.69) 7 (9.09) 9 (11.69) 11 (14.29)  
AJCC stageb
 I 101 (43.72) 32 (41.56) 36 (46.75) 33 (42.86) 0.90
 II 108 (46.75) 38 (49.35) 35 (45.45) 35 (45.45)  
 III 22 (9.52) 7 (9.09) 6 (7.79) 9 (11.69)  
Menopausal status at the diagnosisb
 Postmenopause 149 (64.50) 53 (68.83) 51 (66.23) 45 (58.44) 0.37
 Premenopause 82 (35.50) 24 (31.17) 26 (33.77) 32 (41.56)  
Alcohol intakeb
 Never drinker 112 (48.70) 36 (46.75) 42 (54.55) 34 (44.74) 0.44
 Ever drinker 118 (51.30) 41 (53.25) 35 (45.45) 42 (55.26)  
Education levelb
 High school or less 126 (55.26) 38 (49.35) 41 (53.95) 47 (62.67) 0.25
 College or more 102 (44.74) 39 (50.65) 35 (46.05) 28 (37.33)  
Marital statusb
 Married or cohabitation 188 (81.74) 58 (76.32) 61 (79.22) 69 (89.61) 0.08
 Unmarried or divorced or widowed 42 (18.26) 18 (23.68) 16 (20.78) 8 (10.39)  
  1. MET metabolic equivalent, AJCC American Joint Committee on Cancer
  2. aAnalysis of variance was used for continuous variables and chi-square test was used for categorical variables
  3. bContinuous variables are reported as Mean value (sd) and Categorical variables are reported as No. (%)