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Table 1 Baseline cohort characteristics

From: A model to optimize public health care and downstage breast cancer in limited-resource populations in southern Brazil. (Porto Alegre Breast Health Intervention Cohort)

Variable N (%)
Age (yrs)* 50.6 ± 7.7
Race   
   White 2,964 73.4%
   Black 700 17.3%
   Other 373 9.3%
Number of pregnancies   
   0 322 8.0%
   1–2 1,037 25.7%
   3–4 1,349 33.4%
   >4 1,329 32.9%
Education level   
   Illiterate 259 6.5%
   Between 1 and 7 years of schooling 2.238 56.5%
   Between 8 and 11 years of schooling 1.380 34.9%
   College degree 83 2.1%
Body Mass Index   
   <25 1,062 26.3%
   25–30 1,502 37.2%
   30–40 1,320 32.7%
   >40 153 3.8%
Age at first delivery (yrs)* 21.4 ± 5.1
Menopause after 55 yrs old† 88 4.4%
Menarche before 12 yrs old 872 21.6%
History of HRT use 485 12.0%
History of OC use 3,331 82.5%
Smoking status   
   Current smoker 1,170 29.0%
   Former smoker 393 9.7%
   No historry 2,474 61.3%
First-degree relative with history of cancer (any site) 1,395 33.7%
First-degree relative with history of breast or ovary cancer 248 6.1%
   Previous breast biopsy 154 3.8%
  1. HRT = Hormone Replacement Therapy, OC = Oral Contraceptives
  2. * expressed as mean ± standart deviation; † percentage over 2,002 women who already entered menopause