Self-reported smoking in online surveys: prevalence estimate validity and item format effects.

@article{Klein2007SelfreportedSI,
  title={Self-reported smoking in online surveys: prevalence estimate validity and item format effects.},
  author={Jonathan D. S. Klein and Randall K. Thomas and Erika J Sutter},
  journal={Medical care},
  year={2007},
  volume={45 7},
  pages={691-5}
}
OBJECTIVES We assessed validity of self-reported smoking prevalence estimates from an online sample, and explored the impact of different item response formats on estimates. METHODS Self-reported current smoking status was obtained from 110,837 respondents from the Harris Poll Online (HPOL) panel from April 2004 to January 2005. Current smoking prevalence was compared with national estimates from the 2004 Behavioral Risk Factor Surveillance System (BRFSS), 2003 National Health Interview… CONTINUE READING

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