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Table 1 Sample characteristics (Study 1; N = 5,612)

From: Social desirability and self-reported health risk behaviors in web-based research: three longitudinal studies

Socio-demographics   
Age   M = 46.9 (16.0)
Sex Female 51.2%
  Male 48.8%
Personal net monthly income (in Euros) Median = 1,300
Level of education Primary school 9.7%
  Intermediate secondary education 26.4%
  Higher secondary education/preparatory university education 11.0%
  Intermediate vocational education 23.1%
  Higher vocational education 22.3%
  University 7.5%
Social desirability (Marlowe-Crowne)   M = 5.9 (1.5)
(Scale: 0-10)
Health risk behaviors   
Current behavior Alcohol use 72.7%
  Sedatives 4%
  Soft drugs 3%
  XTC 0.5%
  Hallucinogens 0.2%
  Hard drugs 0.5%
  Smoking 35.6%
Frequency Alcohol use M = 3.4 (2.2)
  Sedatives M = 13.3 (27.6)
  Soft drugs M = 13.4 (26.0)
  XTC M = 1.5 (0.9)
  Hallucinogens M = 1.2 (0.6)
  Hard drugs M = 2.9 (3.3)
  Smoking M = 11.6 (8.1)