Distribution of Epidemiologic/Demographic Variables and Nutrition Variables.
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aTotals may not equal total N due to missing data. bP-value from the two-sided chi-squared test (for categorical variables), Student's t-test (for continuous demographic variables), or Wilcoxon rank sum test (for nutrition variables). cPack years computed for former and current smokers only. dETS = Environmental Tobacco Smoke exposure in never smokers. eMacro- and micronutrients are adjusted by total calorie intake.
创建时间：
2013-01-23
