Percentage of head injury (1996 and 1998) in Taiwan.
Variable
Before the helmet use law
After the helmet use law
% Change
value
Percentage of head injury
a
0.0812%
0.0813%
0.1232%
Geographic locations
<0.0001
North
0.0461%
0.0356%
−22.8046%
Center
0.0703%
0.0796%
13.1933%
South
0.1058%
0.1201%
13.4863%
East
0.0544%
0.0705%
29.6525%
Gender
<0.0001
Male
0.0949%
0.1008%
6.1654%
Female
0.0688%
0.0637%
−7.4226%
Age
<0.001
Children
0.0106%
0.0100%
−6.0954%
Adult 15–24
0.1899%
0.1603%
−15.5572%
Adult 25–64
0.0797%
0.0886%
11.1168%
Elderly
0.0797%
0.0803%
0.8056%
Rural/urban
<0.001
Special municipality
0.0506%
0.0465%
−8.2351%
City
0.0607%
0.0474%
−21.9082%
County administered
0.0724%
0.0710%
−1.8142%
Town
0.1168%
0.1719%
47.2089%
Village
0.1134%
0.0919%
−18.9339%
Observations = 1,809,237 (before law in 1996 = 888,179; after law in 1998 = 921,058); number of head injury = 1,254 (before law = 609; after law = 645).
