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Table 1 Characteristics of 1189 bicycle-related injuries in Olmsted County, MN, 2002–2011

From: Pediatric bicycle-related head injuries: a population-based study in a county without a helmet law

Characteristic No. (%)
Age, years  
 5 to 9 488 (41.0)
 10 to 14 535 (45.0)
 15 to 18 166 (14.0)
Sex  
 Female 367 (30.9)
 Male 822 (69.1)
Circumstances  
 Single bicycle 1026 (86.3)
 Bicycle vs. car 91 (7.6)
 Bicycle vs. pedestrian 34 (2.9)
 Bicycle vs. bicycle 9 (0.8)
 Other 29 (2.4)
Location of injuriesa  
 Extremity 895 (75.3)
 Head 500 (42.0)
 Brain 97 (8.2)
 Abdomen 50 (4.2)
 Chest 41 (3.4)
 Neck 14 (1.2)
Month of year  
 January 2 (0.2)
 February 4 (0.3)
 March 28 (2.3)
 April 102 (8.6)
 May 162 (13.6)
 June 202 (17.0)
 July 208 (17.5)
 August 221 (18.6)
 September 165 (13.9)
 October 73 (6.1)
 November 19 (1.6)
 December 3 (0.3)
Day of week  
 Sunday 182 (15.3)
 Monday 201 (16.9)
 Tuesday 163 (13.7)
 Wednesday 165 (13.9)
 Thursday 155 (13.0)
 Friday 146 (12.2)
 Saturday 177 (14.9)
  1. aSome patients had multiple injury locations.