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Research Article

School Playground Surfacing and Arm Fractures in Children: A Cluster Randomized Trial Comparing Sand to Wood Chip Surfaces

  • Andrew W. Howard mail,

    andrew.howard@sickkids.ca

    Affiliations: Division of Orthopaedic Surgery, Hospital for Sick Children, Toronto, Ontario, Canada, Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Ontario, Canada

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  • Colin Macarthur,

    Affiliation: Bloorview Kids Rehab, Toronto, Ontario, Canada

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  • Linda Rothman,

    Affiliation: Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Ontario, Canada

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  • Andrew Willan,

    Affiliation: Child Health Evaluative Sciences, Hospital for Sick Children, Toronto, Ontario, Canada

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  • Alison K. Macpherson

    Affiliation: Department of Kinesiology, York University, Toronto, Canada

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  • Published: December 15, 2009
  • DOI: 10.1371/journal.pmed.1000195

Reader Comments (11)

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Clarification regarding 'FIBAR'

Posted by Andrew_Howard on 13 Jan 2010 at 00:27 GMT

'FIBAR' is a trade name describing a particular engineered wood fibre playground surfacing product. The surfaces in this study used an engineered wood fibre product supplied and installed by a different manufacturer. In all instances in the paper, please read 'engineered wood fibre' for fibar. Apologies for any misunderstanding or inconvenience which this may have caused.

Competing interests declared: Author of study

RE: Clarification regarding 'FIBAR'

Rogerwill replied to Andrew_Howard on 13 Jan 2010 at 15:10 GMT

Granitic Sand” is a name describing a particular type of sand. The study makes many references to “sand” in general, including in its title. Could we have a clarification that the study involves “granitic” sand only?

“Woodchips” is a name describing a product produced by a wood chipper. Engineered Wood Fiber is not “Woodchips”. Could we have a clarification that the study involves Engineered Wood Fiber and not “woodchips”?

Competing interests declared: I am the owner of a company that provides Engineered Wood Fiber and Granitic Sand products.

RE: RE: Clarification regarding 'FIBAR'

Rogerwill replied to Rogerwill on 14 Jan 2010 at 01:35 GMT

Further to your retraction of the Fibar label, you have stated: "The surfaces in this study used an engineered wood fibre product supplied and installed by a different manufacturer".

None of the wood fiber surfaces were installed by the manufacturer. All wood fiber installations in the study were preformed by the board's own forces.

Please issue a further retraction to clarify this issue.

Competing interests declared: we are manufacturers of both the products used in the study. We are suppliers to the Toronto District School Board