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General characteristics of subjects in the sample 1 and sample 2
1)Student's t-test for continuous variables and Chi-square test for categorical variables
2)Data available for 801 (Sample 1) individuals
3)N (%)
4)Data available for 855 (Sample 1) and 380 (Sample 2) individuals
5)Data available for 737 (Sample 1) and 362 (Sample 2) individuals
