Table 1.

Characteristics of Mexican women with histologically confirmed breast cancer and their population-based controls

CharacteristicCase patients (n = 475)Controls (n = 1,391)
Mean (SD)
P*
Age (y)53.5 (12.8)49.4 (13.4)<0.01
Parity3.8 (3.2)4.4 (3.4)<0.01
BMI (kg/m2)26.9 (4.8)27.2 (4.8)0.34
Percentage
P
Family history of breast cancer (%)42<0.01
Nulliparous women (%)1711<0.01
Postmenopausal women (%)6051<0.01
Women with high socioeconomic status (%)3020<0.01
Median (5th-95th percentile)
P§
Caloric intake (kcal/d)1,696 (812-2,683)1,565 (847-2,735)0.02
Carbohydrate (g/d)246 (106-424)222 (113-412)<0.01
Animal fat (g/d)36.2 (10.9-79.7)36.9 (13.8-79.5)0.16
Polyunsaturated fat (g/d)5.3 (2.7-8.7)5.4 (3.3-9.5)0.09
Dietary fiber (g/d)23.8 (9.2-42.7)27.5 (10.1-44.2)<0.01
  • * t test.

  • BMI available for 226 cases and 669 controls.

  • χ2 test.

  • § Kruskal-Wallis test.