Estimates of helmet wearing effect (Yes vs. No) in multiple logistic regression analysis for close passing using various cut points.
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*There were only two passing events less than 0.5 m. In each case, Walker did not wear a helmet. +There were only 13 overtaking events less than 0.75 m. Close passing events occurred 0.6% and 0.5% of the time when wearing and not wearing a helmet respectively.
创建时间：
2013-09-25
