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Table 9 Baseline piecewise constant hazard estimates for postmenopausal ER+ tumors and ER- tumors in the women from the EPIC and the WHI studiesa

From: Risk prediction for estrogen receptor-specific breast cancers in two large prospective cohorts

 

Age groups, years

40.0–44.9

45.0–49.9

50.0–54.9

55.0–59.9

60.0–64.9

65.0–69.9

70.0–74.9

≥ 75.0

EPIC study

 ER+

30

88

152

189

227

239

233

186

 ER−

19

35

44

43

42

41

40

31

WHI study

 ER+

126

173

185

237

243

270

 ER−

48

50

43

50

39

50

  1. Hazards are presented as number of tumors per 105 person-years
  2. EPIC European Prospective Investigation into Cancer and Nutrition, WHI Women’s Health Initiative, ER estrogen receptor
  3. aRisk factor profiles for baseline hazard: country = France (only for EPIC), menopausal status = 1 (postmenopausal), age at menopause ≤ 45 years, duration of breastfeeding = 0, age at menarche ≤ 11 years, duration of hormone replacement therapy = 0, full-term pregnancy = 0 (nulliparous), body mass index < 25 kg/m2, height_d10 (body height in cm divided by 10) = 16, alcohol intake (drinks/day) = 0