Number of patients included | Univariate | Multivariate | |||
---|---|---|---|---|---|
RR | p Value | RR | p Value | ||
Marital status | |||||
Married/cohabiting | 122 | Ref | Ref | ||
Living alone | 33 | 0.85 (0.71 to 1.02) | 0.080 | 0.84 ( 0.68 to 1.04) | 0.121 |
Living apart | 13 | 0.85 (0.66 to 1.10) | 0.223 | 0.77 (0.61 to 0.97) | 0.028 |
Smoking | |||||
No | 152 | Ref | Ref | ||
Yes | 15 | 0.78 (0.51 to 1.19) | 0.248 | 0.81 (0.54 to 1.23) | 0.323 |
Method of surgery | |||||
Partial mastectomy | 113 | Ref | Ref | ||
Mastectomy | 48 | 1.00 (0.82 to 1.21) | 0.976 | 1.10 (0.89 to 1.35) | 0.389 |
Associated surgery | |||||
Sentinel node/no axillary operation | 128 | Ref | Ref | ||
Axillary lymph node dissection | 40 | 0.9 0 (0.72 to 1.12) | 0.345 | 0.83 (0.64 to 1.09) | 0.178 |
Age | 165 | 0.00 (–0.01 to 0.01) | 0.710 | 0.00 (–0.01 to 0.01) | 0.671 |
Alcohol intake | |||||
Modest | 91 | Ref | Ref | ||
Moderate/heavy* | 76 | 1.02 (0.86 to 1.20) | 0.848 | 1.01 (0.83 to 1.23) | 0.918 |
Saltin-Grimby Activity Level Scale† | |||||
1 | 22 | Ref | Ref | ||
2 | 113 | 1.21 (0.87 to 1.69) | 0.260 | 1.23 (0.82 to 1.83) | 0.314 |
3+4 | 34 | 1.25 (0.87 to 1.78) | 0.227 | 1.38 (0.90 to 2.13) | 0.144 |
*Moderate/heavy consumption equals more than 1 unit/week.
†Levels of physical activity are categorised accordingly: (1) physically inactive, (2) some light physical activity, (3) regular physical activity and training and (4) regular hard physical training for competition sports.