The Effect of Motorcycle Helmet Use on the Probability
of Fatality and the Severity of Head And Neck Injuries
Table III - Tobit Estimates of Head Injury Severity Model
| Equation |
Constant |
H |
HI |
K1 |
K2 |
BA |
A |
EA |
EX |
o |
1 |
| 3 |
-9.97* |
-17.24* |
0.45 |
0.0016* |
|
1.23* |
0.13 |
-5.31** |
-0.068** |
20.58 |
-1275.6 |
|
(-3.03) |
(-3.58) |
(0.95) |
(5.98) |
|
(4.48) |
(1.07) |
(-2.34) |
(-2.09) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 4 |
-8.23** |
-17.34* |
0.42 |
|
0.0010* |
1.41* |
0.12 |
-5.85* |
-0.057 |
20.83 |
-1279.5 |
|
(-2.54) |
(-3.58) |
(0.86) |
|
(5.123) |
(5.149) |
(1.02) |
(-2.56) |
(-1.76) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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.
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