Statistical models
| Dependent variable = FOD | Model 1 (n = 253) (2002–2006) | Model 2 (n = 168) (2007–2009) | Model 3 (n = 223) (2010 onwards) |
|---|---|---|---|
| Independent variables | |||
| Constant | −1.31 × 10^(1)±1.72 × 10^(−1) *** | −1.29 × 10^(1)±1.87 × 10^(−1)*** | −1.28 × 10^(1)±1.85 × 10^(−1)*** |
| LabCostOD | −1.67 × 10^(−1)±5.84 × 10^(−2)** | −1.18 × 10^(−1)±5.02 × 10^(−2)* | −6.30 × 10^(−2)±5.35 × 10^(−2) |
| OreOD | −3.31 × 10^(−1)±2.27 × 10^(−1) | −1.01 × 10^(−2)±1.29 × 10^(−1) | 2.02 × 10^(−1)±2.41 × 10^(−1) |
| GerdOD | 6.14 × 10^(−4)±1.45 × 10^(−3) | −2.32 × 10^(−3)±1.41 × 10^(−3) | 4.02 × 10^(−3)±1.49 × 10^(−3)** |
| GDPpppOD | −6.53 × 10^(−5)±6.93 × 10^(−5) | 1.15 × 10^(−4)±3.97 × 10^(−5)** | 1.12 × 10^(−4)±5.13 × 10^(−5)* |
| Dummy | |||
| Industry | Included | Included | Included |
| Dependent variable = | Model 1 ( | Model 2 ( | Model 3 ( |
|---|---|---|---|
| Constant | −1.31 × 10^(1)±1.72 × 10^(−1) *** | −1.29 × 10^(1)±1.87 × 10^(−1)*** | −1.28 × 10^(1)±1.85 × 10^(−1)*** |
| −1.67 × 10^(−1)±5.84 × 10^(−2)** | −1.18 × 10^(−1)±5.02 × 10^(−2)* | −6.30 × 10^(−2)±5.35 × 10^(−2) | |
| −3.31 × 10^(−1)±2.27 × 10^(−1) | −1.01 × 10^(−2)±1.29 × 10^(−1) | 2.02 × 10^(−1)±2.41 × 10^(−1) | |
| 6.14 × 10^(−4)±1.45 × 10^(−3) | −2.32 × 10^(−3)±1.41 × 10^(−3) | 4.02 × 10^(−3)±1.49 × 10^(−3)** | |
| −6.53 × 10^(−5)±6.93 × 10^(−5) | 1.15 × 10^(−4)±3.97 × 10^(−5)** | 1.12 × 10^(−4)±5.13 × 10^(−5)* | |
| Industry | Included | Included | Included |
Note(s): *p < 0.05, **p < 0.01, ***p < 0.0001