Skip to main content

Table 3 Menstrual history and breastfeeding duration of the study groups

From: Determinants of breast cancer in Saudi women from Makkah region: a case-control study (breast cancer risk factors among Saudi women)

ParameterControl (n = 218)Case (n = 214)P-value
Age of started menstruation
 < 10 years old1 (0.5)25 (11.7%)< 0.001
 11–14 years old196 (89.9%)150 (70.1%)
 > 15 years old21 (9.6%)39 (18.2%)
Age at menopause
 < 35 years old2 (0.9%)8 (3.7%)0.271
 36–40 years old25 (11.5%)16 (7.5%)
 41–45 years old68 (31.2%)46 (21.5%)
 > 46 years old123 (56.4%)144 (67.3%)
Breastfeeding duration
 No51 (23.4%)40 (18.7%)0.052
 Yes167 (76.6%)174 (81.3%)
  < 6 months76 (45.5%)48 (27.6%)
  6–12 months42 (25.1%)70 (40.2%)
  > 13 months49 (29.4%)56 (32.2%)
  1. Values are expressed as frequency (%)
  2. Duration of breast feeding is average for each pregnancy
  3. P-values are obtained by x2 test