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ELECTRONIC ARTICLE:
Mark L. Silen, Evan R. Kokoska, Diana G. Fendya, Arlet G. Kurkchubasche, Thomas R. Weber, Thomas F. Tracy, and Jr, MD
Rollover Injuries in Residential Driveways: Age-related Patterns of Injury
Pediatrics 1999; 104: e7 [Abstract] [Full text] [PDF]
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[Read eLetters] Possible Patient Selection Bias
Harsh Grewal   (16 July 1999)

Possible Patient Selection Bias 16 July 1999
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Harsh Grewal,
Pediatric Surgeon
University Kansas School of Medicine-Wichita

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Re: Possible Patient Selection Bias

hrgrewal{at}worldnet.att.net Harsh Grewal

Dear Dr. Silen and Co-authors,

I enjoyed your paper and in general agree with your conclusions. I do have a question regarding the conclusion that younger children were more severely injured by rollovers as compared to older children.

Since this was a retrospective chart review of trauma patients admitted to a Children's Hospital, it is possible that all children with rollover injuries were not admitted to the authors institution. Indeed older children with rollover injuries may have been treated at an adult trauma center and may not have been transferred to the authors Children's Hospital. This may have skewed the authors sample, since severely injured older children may not have been transferred to the authors Children's Hospital as often as severely injured infants.

Thank You.