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National Alliance on Mental Illness
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Schizophrenia Survey: Methodology

The National Alliance on Mental Illness (NAMI) commissioned Harris Interactive to conduct research to measure attitudes and awareness of schizophrenia among members of the general adult public, as well as among caregivers and individuals living with schizophrenia.

  • The general adult public portion of this research was conducted from February 13 –February 19, 2008, by Harris Interactive via its Harris Poll Online Research Panel, a database that consists of several million people who have agreed to participate in online research projects.
  • The portions of the research among caregivers and people living with schizophrenia were conducted online between February 11 – February 25, 2008, via NAMI email lists.
  • A total of 1,012 HPOL respondents (adults), 256 caregivers and 258 people living with schizophrenia qualified and completed the survey. The survey averaged about 17 minutes.
  • For the general adult public, demographic weighting was used to ensure that the data represent the national population of adult U.S. citizens. Propensity score weighting adjusted for respondents’ propensity to be online.
  • Data for the caregivers and individuals living with schizophrenia were not weighted.

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