Table 1 Characteristics of study participants according to physical activity levels
| Â | 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) |  |