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Table 1 Characteristics of the study population

From: Self-reported exposure to pesticides in residential settings and risk of breast cancer: a case-control study

Variables Cases (%) Controls (%)
Age < 50 136 (30.4) 361 (47.6)
  50-59 121 (27.1) 173 (22.8)
  60-69 101 (22.6) 132 (17.4)
  > 70 89 (19.9) 92 (12.1)
Education ≤High school 175 (41.6) 261 (34.8)
  ≤College graduate 157 (37.3) 321 (42.9)
  Post graduate 89 (21.14) 167 (22.3)
Race White 384 (91.2) 689 (92.0)
  Black 29 (6.9) 56 (7.5)
  Asian/Others 8 (1.9) 4 (0.5)
Religion Protestant 77 (18.3) 134 (17.9)
  Catholics 167 (39.7) 330 (44.1)
  Jewish 146 (34.7) 231 (30.8)
  Others 25 (5.9) 39 (5.2)
  None 4 (1.0) 12 (1.6)
  Refused 2 (0.5) 3 (0.4)
BMI* < 25 200 (48.19) 370 (50.3)
  25-29.9 124 (29.9) 206 (28.0)
  ≥30 91 (21.9) 160 (21.7)
Menstrual status Pre menopausal 114 (27.1) 307 (41.0)
  Peri menopausal 41 (9.7) 70 (9.4)
  Postmenopausal 266 (63.2) 372 (49.7)
Age at menopause ≤ 49 110 (42.3) 188 (51.0)
  50 45 (17.3) 57 (15.4)
  ≥51 105 (40.4) 124 (33.6)
Age at menarche < 12 216 (51.3) 373 (49.9)
  ≥12 205 (48.7) 375 (50.1)
Ever used an Oral Contraceptive Yes 193 (45.8) 369 (49.5)
  No 228 (54.2) 376 (50.5)
  1. *BMI = body mass index.