Table 1.

Selected characteristics of study participants

CharacteristicAll (n = 50)
Age (years), mean, range37.2 (18–62)
Ethnicity, n (%)
 Other white25 (50%)
 Ashkenazi Jewish12 (24%)
 Hispanic3 (6%)
 East Asian6 (12%)
 South Asian4 (8%)
Parous, n (%)20 (40%)
Age at menarche (years), mean (SD)12.4 (1.3)
Postmenopausal, n (%)13 (26%)
Current oral contraceptive use, yes, n (%)6 (12%)
Current smoking status, yes, n (%)1 (2%)
Current alcohol consumption, yes, n (%)43 (86%)
Mastectomy, yes, n (%)3 (6%)
Oophorectomy, yes, n (%)9 (18%)
Current hormone replacement therapy use, n (%)8 (16%)
Physical activity/inactivity variables (per day)
Sedentary time (hours), mean (SD)8.60 (1.5)
Percentage of time in sedentary mode, n (%)
 <60%13 (26)
 60%–70%23 (46)
 >70%14 (28)
Longest sedentary bout (seconds), mean (SD)7,158 (3,854)
MET rate, mean (SD)1.83 (0.2)
MVPA (min), mean (SD)44.9 (21.7)
Percentage of time in MVPA, n (%)
 <5%22 (44)
 5%–8%19 (38)
 >8%9 (18)
Body size variables
BMI, kg/m2 (SD)24.6 (5)
 Normal (19.0–24.99; %)29 (58)
 Overweight (25.0–29.99; %)14 (28)
 Obese (>30; %)7 (14)
Waist circumference, inches (SD)33.2 (4.8)
Hip circumference, inches (SD)39.1 (4.1)
WHR, (SD)0.85 (0.06)
Index of central obesity, (SD)a0.52 (0.07)

Abbreviation: MVPA, Moderate to vigorous physical activity.

  • aIndex of central obesity = wait circumference (inches)/height (inches).