Table 3 Risk of dying from breast cancer in relation to physical activity from first menses to reference datea and during year before the reference date, among breast cancer patients aged 40 years or younger at diagnosis
From: Exercise activity, body size and premenopausal breast cancer survival
Physical activity | Censored | Events | HRb | 95% Cl | |
|---|---|---|---|---|---|
Average hours per week from first menses to reference date | |||||
0 | 117 | 68 | 1.00 | ||
0.1–0.7 | 71 | 31 | 0.86 | 0.56–1.32 | |
0.8–1.6 | 63 | 17 | 0.59 | 0.35–1.01 | |
1.7–3.7 | 66 | 32 | 0.87 | 0.57–1.33 | |
3.8+ | 35 | 25 | 1.30 | 0.81–2.09 | |
Trend P | 0.88 | ||||
Average hours per week during year before reference date | |||||
0 | 265 | 143 | 1.00 | ||
1–4 | 43 | 15 | 0.85 | 0.50–1.45 | |
5+ | 44 | 15 | 0.78 | 0.45–1.34 | |
Trend P | 0.31 | ||||
Hrs/wk from first menses to reference date | Hrs/wk during year before reference date | ||||
0 | 0 | 117 | 68 | 1.00 | |
0.1–3.7 | 0 | 135 | 63 | 0.86 | 0.61–1.21 |
3.8+ | 0 | 13 | 12 | 1.34 | 0.72–2.47 |
0.1–3.7 | 1+ | 65 | 17 | 0.61 | 0.36–1.04 |
3.8+ | 1+ | 22 | 13 | 1.26 | 0.68–2.32 |
Interaction P | 0.07 |
