The Effect of Motorcycle Helmet Use on the Probability
of Fatality and the Severity of Head And Neck Injuries

TableIV - Tobit Estimates of Neck Injury Severity Model

EquationConstantHHIK1K2BAAEAEXHWo1
5-28.42*-21.34*1.58**0.000810.55**0.21-4.590.02116.98-409.98
(-6.08)(-2.58)(2.02)(2.83)(2.02)(1.71)(-1.68)(0.58)
6-27.60*-22.59*1.68**0.00041**0.70*0.20-5.240.03217.33-411.87
(-5.94)(-2.61)(2.05)(2.02)(2.59)(1.64)(-1.88)(0.87)
7-28.85*-30.12**1.61**0.00080*0.54**0.23-4.560.0213.1017.02-409.90
(-6.09)(-2.09)(2.02)(2.82)(1.96)(2.54)(1.70)(-1.87)(0.72)
8-28.00*-26.181.63**0.00040**0.69**0.22_5.250.033(0.32)
t Statistics in parenthesis
* Significant at 1% level
** Significant at 5% level


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© Copyright Jonathan P. Goldstein Ph.D. 1986. All Rights Reserved.