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Table 2 Incidence of 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

 

Females

Males

Total

Age group

No.

Ratea

95 % CIa

No.

Ratea

95 % CIa

No.

Rateb

95 % CIb

Any injury

         

 5–9 years

193

403

(346, 460)

295

585

(518, 652)

488

496

(452, 540)

 10–14 years

150

327

(275, 380)

385

780

(702, 858)

535

560

(512, 607)

 15–18 years

24

61

(36, 85)

142

352

(294, 409)

166

211

(179, 243)

 All ages

367

278

(249, 306)

822

589

(549, 629)

1189

438

(413, 463)

Head injury

         

 5–9 years

89

184

(145, 222)

173

337

(286, 387)

262

262

(230, 294)

 10–14 years

43

94

(66, 122)

132

267

(222, 313)

175

183

(156, 210)

 15–18 years

7

18

(5, 31)

56

138

(102, 174)

63

80

(60, 100)

 All ages

139

104

(87, 121)

361

255

(229, 281)

500

182

(166, 197)

Brain injury

         

 5–9 years

11

23

(9, 36)

18

35

(19, 51)

29

29

(18, 39)

 10–14 years

13

28

(13, 44)

34

69

(46, 92)

47

49

(35, 63)

 15–18 years

2

5

(0, 12)

19

47

(26, 68)

21

27

(15, 38)

 All ages

26

20

(12, 27)

71

50

(39, 62)

97

35

(28, 43)

  1. aIncidence per 100,000 person-years, age-adjusted to the US white population in the year 2000
  2. bIncidence per 100,000 person-years, age- and sex-adjusted to the US white population in the year 2000