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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Metabolomics. 2013 Aug 21;10(2):259–269. doi: 10.1007/s11306-013-0574-1

Table 1.

Baseline characteristics of study participants

Baseline characteristics PLCO1
N=505
%		 Navy2
N=258
%		 Shanghai3
N=184
%
Biospecimen Serum Serum Plasma
Fasting status Non-fasting Non-fasting Fasting4
Age (years) <60 19.5 59.9 52.7
60–64 31.6 17.2 14.7
65–69 30.4 13.0 14.7
70+ 18.5 9.9 17.9
Gender Women 43.8 22.9 57.6
Men 56.2 77.1 42.4
Smoking Women
Current 7.2 8.6 4.7
Former 39.8 36.2 0
Never 52.9 55.2 95.3
Men
Current 10.2 7.0 53.8
Former 52.8 46.0 0
Never 37.0 47.0 46.2
BMI (kg/m2) <20 2.6 1.9 13.6
20–24.9 30.2 32.1 47.8
25.0–29.9 42.7 46.9 35.3
30.0+ 24.5 19.1 3.3
1

The Prostate, Lung, Colorectal, and Ovarian Cancer study

2

The Navy Adenoma study

3

The Shanghai Physical Activity study

4

84% adhered to fasting protocol