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Erratum to: Sports participation, perceived neighborhood safety, and individual cognitions: how do they interact?

  • Mariëlle A Beenackers
  • Carlijn BM Kamphuis
  • Alex Burdorf
  • Johan P Mackenbach
  • Frank J van Lenthe
Open Access
Erratum

Abstract

After publication of this work [Beenackers et al: Int J Behav Nutr Phys Act 2011, 8:76] it was realized that formula 3 and formula 4 in the Statistical Analysis section of the Methods were incorrectly listed. Since the formulas were correctly used in the analysis, this correction does not affect the results or conclusions of the paper.

Correction

After publication of this work [1] it was realized that formula 3 and formula 4 in the Statistical Analysis section of the Methods were incorrectly listed. Since the formulas were correctly used in the analysis, this correction does not affect the results or conclusions of the paper. The formulas should be:
β 1 _ c o n d i t i o n a l _ o n _ Z m e d i u m = β 1 + β 6 Open image in new window
(3)
β 1 _ c o n d i t i o n a l _ o n _ Z l o w = β 1 + β 7 Open image in new window
(4)

So, to obtain the coefficient of the individual cognition (X) for the second category of perceived neighborhood safety (Zmedium), the coefficient of X (β1) should be added to the coefficient of the interaction term XZmedium6) (equation 3). Because of the logarithmic scale, the odds ratio of an interaction term can be interpreted as a multiplicative factor. To obtain the odds ratio of the individual cognition (X) for the second category of perceived neighborhood safety (Zmedium), the odds ratio of X (EXPβ1) should be multiplied by to the odds ratio of the interaction term XZmedium (EXPβ6).

To obtain the coefficient of the individual cognition (X) for the last category of perceived neighborhood safety (Zlow), the coefficient of X (β1) should be added to the coefficient of the interaction term XZlow7) (equation 4). Again, to obtain the odds ratio of the individual cognition (X) for the last category of perceived neighborhood safety (Zlow), the odds ratio of X (EXPβ1) should be multiplied by to the odds ratio of the interaction term XZlow (EXPβ7).

We regret any inconvenience that this may have caused.

References

  1. 1.
    Beenackers MA, Kamphuis CBM, Burdorf A, Mackenbach JP, van Lenthe FJ: Sports participation, perceived neighborhood safety, and individual cognitions: how do they interact?. Int J Behav Nutr Phys Act. 2011, 8: 76-10.1186/1479-5868-8-76.CrossRefGoogle Scholar

Copyright information

© Beenackers et al; licensee BioMed Central Ltd. 2011

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  • Mariëlle A Beenackers
    • 1
  • Carlijn BM Kamphuis
    • 1
  • Alex Burdorf
    • 1
  • Johan P Mackenbach
    • 1
  • Frank J van Lenthe
    • 1
  1. 1.Department of Public HealthErasmus University Medical CenterRotterdamthe Netherlands

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