Table 1.

Characteristics of study sample

Total sample (n = 62)Normal weight (BMI < 25 kg/m2; n = 27)Overweight/obese (BMI ≥ 25 kg/m2; n = 35)P
BMI, kg/m2
    Mean (SE)26.1 (0.6)22.0 (0.3)29.3 (0.6)<0.001
    Range18.8-40.718.8-24.525.2-40.7
Age, y
    Mean (SE)52.4 (0.8)53.1 (1.3)51.8 (0.9)0.41
    Range39-6840-6539-68
Race, % (n)
    Caucasian87 (54)89 (24)86 (30)0.51
    African-American13 (8)11 (3)14 (5)
Menopausal status, % (n)
    Perimenopausal32 (20)30 (8)34 (12)0.71
    Postmenopausal68 (42)70 (19)66 (23)
Bilateral vs unilateral RPFNA
    Bilateral29 (18)30 (8)29 (10)0.94
    Unilateral71 (44)70 (19)71 (25)
HRT, % (n)
    Current0 (0)0 (0)0 (0)0.56
    Ever29 (18)30 (8)29 (10)
    Never71 (44)70 (19)71 (25)
Prior HRT type, % (n)
    Estrogen only11 (8)15 (4)11 (4)*
    Estrogen + progesterone16 (10)15 (4)17 (6)*
    Family history of breast cancer, % (n)40 (25)37 (10)43 (15)0.65
Prior abnormal biopsy, % (n)
    Atypia16 (9)11 (3)17 (6)0.59
    LCIS8 (5)7 (2)9 (3)*
    Contralateral DCIS8 (5)7 (2)9 (3)*
    History of contralateral breast cancer21 (13)22 (6)20 (7)0.95
BRCA1 mutation, % (n)2 (1)0 (0)3 (1)*
BRCA2 mutation, % (n)3 (2)0 (0)3 (2)*
  • NOTE: BMI was compared using the Satterthwaite t test. Age was compared using the pooled t test. Race, menopausal status, bilateral versus unilateral RPFNA, HRT, and family history of breast cancer were compared using the test of proportions. Prior abnormal biopsy was compared using the χ2 test.

    Abbreviations: LCIS, lobular carcinoma in situ; DCIS, ductal carcinoma in situ.

  • * Too few cases to make statistical comparisons.