Table 2 Adjusted sub-distribution hazard ratios for developing depression in breast cancer survivors compared to noncancer control group by age categories
From: Depression risk among breast cancer survivors: a nationwide cohort study in South Korea
Age group | Â | Subjects, No. | Case, No. | Duration, PY | Incidence rate (per 1,000 PY) | sHR (95% CI) | ||
|---|---|---|---|---|---|---|---|---|
Model 1 | Model 2 | Model 3 | ||||||
All ages | Control | 99,834 | 18,696 | 655078.6 | 28.5 | 1 (ref.) | 1 (ref.) | 1 (ref.) |
|  | Breast cancer | 59,340 | 14,492 | 357111.2 | 40.6 | 1.39 (1.36–1.42) | 1.39 (1.36–1.42) | 1.39 (1.36–1.42) |
Age ≤ 50 | Control | 49,312 | 7,039 | 333091.1 | 21.1 | 1 (ref.) | 1 (ref.) | 1 (ref.) |
|  | Breast cancer | 29,922 | 6,516 | 183835.9 | 35.4 | 1.64 (1.58–1.69) | 1.69 (1.58–1.69) | 1.64 (1.58–1.70) |
Age > 50 | Control | 50,522 | 11,657 | 321987.4 | 36.2 | 1 (ref.) | 1 (ref.) | 1 (ref.) |
|  | Breast cancer | 29,418 | 7,976 | 173275.3 | 46 | 1.24 (1.20–1.27) | 1.24 (1.21–1.28) | 1.23 (1.20–1.27) |
P for interaction |  |  |  |  | < 0.001 | < 0.001 | < 0.001 | |