Table 4 Parameter estimates of the fitted models (M1–M5) and their standard errors, t values and significance (p)
Model | Par | Estimate | Standard error | t value | p |
|---|---|---|---|---|---|
M1 | \({\beta }_{1}\) | 22.21846 | 2.640614 | 8.414127 | *** |
\({\beta }_{2}\) | 9.105472 | 0.2967 | 30.689166 | *** | |
\(c\) | 1.690559 | 0.061311 | 27.573571 | *** | |
\({\rho }_{1}\) | 0.804632 | ||||
M2 | \({\beta }_{1}\) | − 4.819214 | 0.959261 | − 5.023882 | *** |
\({\beta }_{2}\) | 21.198305 | 3.387182 | 6.25839 | *** | |
\(c\) | 0.028152 | 0.001047 | 26.876751 | *** | |
\({\rho }_{1}\) | 0.788599 | ||||
M3 | \({\beta }_{1}\) | 7.347052 | 0.988377 | 7.43345 | *** |
\({\beta }_{2}\) | − 1.7448 | 0.279239 | − 6.248406 | *** | |
\(c\) | 0.028154 | 0.001047 | 26.884978 | *** | |
\({\rho }_{1}\) | 0.788547 | ||||
M4 | \({\beta }_{1}\) | − 99.295894 | 34.830912 | − 2.850798 | ** |
\({\beta }_{2}\) | 434.709643 | 130.822338 | 3.322901 | *** | |
\(c\) | 0.886917 | 0.045135 | 19.65043 | *** | |
\({\rho }_{1}\) | 0.83759 | ||||
M5 | \({\beta }_{1}\) | 104.147915 | 18.576513 | 5.60643 | *** |
\({\beta }_{2}\) | − 24.54002 | 5.157348 | − 4.758264 | *** | |
\(c\) | 0.333087 | 0.005972 | 55.771999 | *** | |
\({\rho }_{1}\) | 0.81869 | 2.305662 | 2.305662 |