TABLE 2.

Age-adjusted Spearman correlations between dietary factors, cigarette smoking, and mitochondrial DNA copy number (z score) in 2769 women in the Nurses’ Health Study

	Correlation coefficient	Nominal P
Food items
Total fruit	0.05	0.0061
Whole fruit	0.06	0.0041
Fruit juices	0.02	0.22
Citrus products	0.05	0.009
Total vegetables	0.01	0.67
Nutrients
Total flavonoids	0.01	0.71
Flavonols	0.01	0.74
Flavones	0.04	0.02
Flavanones	0.06	0.0031
Flavan-3-ols	−0.001	0.98
Anthocyanidins	0.01	0.47
Vitamin C	0.02	0.40
Vitamin E	0.01	0.60
Cigarette smoking
Pack-years2	−0.08	0.0021
Smoking duration,2 y	−0.08	0.0021
Smoking cessation,3 y	0.05	0.08

¹Significant after correction for multiple comparisons: P < 0.008, 0.006, and 0.017 for food items, nutrients, and smoking variables, respectively.

²Among ever smokers.

³Among past smokers.