Skip to main content
. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Mitochondrion. 2020 Nov 18;56:35–39. doi: 10.1016/j.mito.2020.11.006

Table 1.

Descriptive characteristics of 54 women from the Sister Study cohort

Age at enrollment (years), mean (SD) 58.7 (4.5)
Time between enrollment and second visit (years), mean (SD) 7.6 (1.3)
Race/ethnicity, N(%)
Non-Hispanic White 48 89%
Other 6 11%
Education, N(%)
High school or less 8 15%
Some college 20 37%
Bachelor’s degree or higher 26 48%
BMI at enrollment (kg/m 2 ), mean (SD) 28.1 (5.8)
Smoking status at enrollment, N(%)
Never 25 46%
Former 26 48%
Current 3 6%
mtDNA copy number from whole blood at enrollment, median (IQR) 277.6 (108.9, 455.1)
mtDNA copy number from dried blood spot at enrollment, median (IQR) 671.8 (406.4, 944.5)
mtDNA copy number from dried blood spot at second visit, median (IQR) 973.8 (627.4, 1502.7)