Research Article
Estimating Productivity Loss Cost according to Severity of Vehicle Crash Injury
Table 4
Estimation results for WTP for productivity loss (Tobit model).
| | Variable | Minor injury | Moderate injury | Severe injury | Disability | Death | | Coef. (-value) | Coef. (-value) | Coef. (-value) | Coef. (-value) | Coef. (-value) |
| | Constant | −1.33 (−8.52) | −5.23 (−10.95) | −1.70 (−6.88) | −1.13 (−4.05) | −0.15 (−4.59) | | EDU | 1.19 (7.60) | 2.44 (4.49) | 0.33 (1.73) | 0.90 (2.92) | 0.15 (4.69) | | GIN | — | 1.92 (5.01) | 0.56 (2.23) | 1.27 (3.07) | 0.12 (4.38) | | HIN | — | — | — | 1.09 (2.85) | 0.07 (2.66) | | INST | — | 2.73 (5.17) | 0.42 (2.06) | — | — | | EXP | 0.57 (2.87) | 4.20 (6.59) | 0.80 (3.72) | 2.60 (3.94) | 0.08 (2.73) | | RESP | — | 1.34 (3.99) | 0.83 (4.30) | — | — | | DAY | 0.42 (2.56) | 1.29 (2.99) | 0.67 (2.50) | 1.33 (3.27) | 0.11 (2.86) | | COMP | 0.59 (3.16) | 1.28 (3.23) | 0.89 (3.20) | 1.58 (3.83) | 0.09 (2.742) | | 1.05 (18.22) | 2.58 (21.08) | 1.76 (24.02) | 2.74 (25.17) | 0.24 (24.37) |
| | Log-likelihood function | −338.43 | −580.53 | −648.49 | −896.69 | −783.22 | | LM test [df] for Tobit | 235.00 [5] | 181.44 [8] | 668.48 [8] | 350.44 [7] | 256.48 [7] | | Observations | 365 | 423 | 431 | 464 | 439 |
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Note: indicates a significance level of 0.05; indicates a significance level of 0.1. |
