Open Access Highly Accessed Research article

The dynamics of risk perceptions and precautionary behavior in response to 2009 (H1N1) pandemic influenza

Yoko Ibuka1*, Gretchen B Chapman2, Lauren A Meyers34, Meng Li2 and Alison P Galvani1

Author Affiliations

1 Department of Epidemiology and Public Health, Yale School of Medicine, 60 College Street, New Haven, CT 06520, USA

2 Department of Psychology, Rutgers University, 152 Frelinghuysen Road, Piscataway, NJ 08854, USA

3 Section of Integrative Biology, The University of Texas at Austin, Austin, TX 78712, USA

4 Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501, USA

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BMC Infectious Diseases 2010, 10:296  doi:10.1186/1471-2334-10-296

Published: 14 October 2010

Additional files

Additional file 1:

Number of respondents by survey day, April 28 - May26 2009. Table A1 shows the number of respondents who completed the survey on each survey day.

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Additional file 2:

Respondents by age and sex on each survey day, April 28 - May 26 2009. Our survey collects a cross-sectional of the US population on each survey day during April 28 and May 26 2009. The distribution of the respondents by age and sex on each survey day is presented in Figure A1.

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Additional file 3:

Three measures for geographical risk status. To measure geographical risk status by state, we used: (1) cumulative H1N1 cases in the state; (2) cumulative H1N1 cases per million population; and (3) a dichonomous variable to indicate if one or more deaths were reported in the state as of May 27 2009. (1), (2) and the cumulative number of deaths by state are shown in Table A2.

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