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Table 4 Factors associated with helmet use rate according to spline regression analysis

From: Disparity in motorcycle helmet use in Thailand

Use of helmet

Coefficient

SE

t

P>|t|

95% CI

Conviction rate

3.90

1.72

2.27

0.026

0.48

7.33

Population density

6.77

1.49

4.55

<0.001

3.81

9.74