Open Access

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

  • Mariëlle A Beenackers1Email author,
  • Carlijn BM Kamphuis1,
  • Alex Burdorf1,
  • Johan P Mackenbach1 and
  • Frank J van Lenthe1
International Journal of Behavioral Nutrition and Physical Activity20118:114

DOI: 10.1186/1479-5868-8-114

Received: 17 October 2011

Accepted: 20 October 2011

Published: 20 October 2011

The original article was published in International Journal of Behavioral Nutrition and Physical Activity 2011 8:76

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
(3)
β 1 _ c o n d i t i o n a l _ o n _ Z l o w = β 1 + β 7
(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.

Notes

Authors’ Affiliations

(1)
Department of Public Health, Erasmus University Medical Center

References

  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.View ArticleGoogle Scholar

Copyright

© 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.

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