Longitudinal Associations of Leisure-Time Physical Activity and Cancer Mortality in the Third National Health and Nutrition Examination Survey (1986–2006)
Table 1
Characteristics of the NHANES III study participants at baseline ()1.
Percent (%)
Mean (SE)
Minimum
Maximum
Demographic information
Non-Hispanic Whites
76.8
Non-Hispanic Blacks
10.4
Mexican Americans
5.2
Other races/ethnicities
7.8
Sex (men)
48.7
Age (years)
45.0 (0.14)
20.0
89.0
Anthropometric measurements
Body mass index (wt (kgs)/ht2(meter)
26.5 (0.04)
14.4
62.1
Waist circumference (cm)
92.0 (0.12)
57.5
174.1
Physical activity
Inactive
14.8
Any activity
85.2
Regular low to moderate intensity activity
53.3
Regular vigorous activity
16.9
METS/week2
3.67 (0.03)
0
53.5
Activity level compared to peers of same age
More active
33
Less active
21
About the same
44
Blood analyses
Fasting glucose (mg/dL)
99.0 (0.24)
35.4
642.6
Insulin resistance3
10.67
Insulin resistance syndrome4
22.2
Dietary intake
Percent kilocalories from carbohydrate
49.71 (0.09)
1.3
96.5
Percent kilocalories from total fat
33.52 (0.08)
1.2
76.20
Percent kilocalories from protein
15.42 (0.04)
2.0
62.8
Total calories5
2069.41 (8.37)
401.0
9,769.0
Cancer
% (n)6
Overall cancer mortality
5.5 (863)
Self-report of doctor-diagnosed cancer at baseline
3.82 (588)
Individuals with self-reported doctor-diagnosed cancer at baseline who died of cancer
15 (128)
1Data is presented as weighted frequencies (percentages) for categorical variables and as weighted means (SE), minimum, and maximum values for continuous variables. 2METS were only reported for documented leisure time physical activities in the self-report questionnaire. 3Insulin resistance was defined as blood glucose >110 mg/dL and includes individuals who consumed oral hypoglycemic agents or insulin users. 4Insulin resistance syndrome was defined as the presence of at least 3 of 5 criteria per the ATP III criteria. 5Only individuals who reported energy intake between 400–10,000 kcal were included in these analyses. 6n represent actual unweighted frequencies in the analyses dataset.
