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Table 1 Demographic information

From: Examining impulsivity as an endophenotype using a behavioral approach: a DRD2 TaqI A and DRD4 48-bp VNTR association study

Variable Descriptive Statistics
Sex 42% male; 58% female
Age Median = 19.33 (IQR = 18.83–20.35)
Household Income Median = $85,000 (IQR = $50,000 – 120,000)
Ethnicity 44.1% European, 14.4% East Asian, 11.8% Latin American, 5.1% South Asian, 3.1% Native North American, 1.5% African American, 1.0% Pacific Islander, 1.0% African, 13.8% multiracial, 5.6% unknown. (does not sum to exactly 100.0% because of rounding)
  1. Subject Characteristics (n = 195).