Table 1 Demographics of bicyclists hospitalized due to trauma

Age

50.7±24.8

42.3±19.0

-

<0.001

 0-9years

40(6.0)

75(1.0)

6.1(4.14-9.07)

<0.001

 10-19years

106(15.8)

823(11.3)

1.5(1.19-1.85)

<0.001

 20-29 years

16(2.4)

1575(21.6)

0.1(0.05-0.15)

<0.001

 30-39 years

32(4.8)

947(13.0)

0.3(0.24-0.48)

<0.001

 40-49 years

65(9.7)

1015(13.9)

0.7(0.51-0.87)

0.002

 50-59 years

108(16.1)

1268(17.4)

0.9(0.74-1.14)

0.422

 60-69 years

107(16.0)

980(13.4)

1.2(0.99-1.53)

0.064

 70-79yeas

135(20.2)

503(6.9)

3.4(2.77-4.21)

<0.001

 80-89years

56(8.4)

106(1.5)

6.2(4.44-8.66)

<0.001

 ≧90 years

4(0.6)

8(0.1)

5.5(1.65-18.26)

0.002

Gender

0.141

 Male

410(61.3)

4260(58.4)

1.1(0.96-1.33)

--

 Female

259(38.7)

3040(41.6)

0.9(0.75-1.04)

--

 Yes

60(9.0)

6185(84.7)

0.02(0.01-0.02)

<0.001

 No

606(90.6)

946(13.0)

64.6(49.41-84.49)

<0.001

 Unknown

3(0.4)

169(2.3)

0.2(0.06-0.60)

0.001

 7:00–17:00

194(29.0)

2145(29.4)

1.0(0.82-1.17)

0.834

 17:00–23:00

383(57.2)

3909(53.5)

1.2(0.99-1.36)

0.066

 23:00–7:00

92(13.8)

1239(17.0)

0.8(0.62-0.98)

0.033

 Unknown

0(0.0)

7(0.1)

-

0.423

 Private vehicle

202(30.2)

1195(16.4)

2.2(1.85-2.64)

<0.001

 EMS

235(35.1)

3575(49.0)

0.6(0.48-0.67)

<0.001

 Transferred

232(34.7)

2530(34.7)

1.0(0.85-1.18)

0.991

 Bicycle

11(1.6)

75(1.0)

1.6(0.85-3.05)

0.139

 Motorcycle

144(21.5)

1663(22.8)

0.9(0.77-1.13)

0.458

 Car

89(13.3)

2346(32.1)

0.3(0.26-0.41)

<0.001

 Bus or Truck

11(1.6)

372(5.1)

0.3(0.17-0.57)

<0.001

 Out of control

387(57.8)

2105(28.8)

3.4(2.88-3.98)

<0.001

 Obstacle

27(4.0)

739(10.1)

0.4(0.25-0.55)

<0.001

BAC > 50 mg/dL, n(%)

28(4.2)

700(9.6)

0.4(0.28-0.61)

<0.001