Official Journal of the Japan Wood Research Society
Table 2 Results from analysis of the impact of economic level on paper and paperboard demand
From: Socioeconomic factors influencing global paper and paperboard demand
Use | Regression model | Estimation method | Adj. R 2 | a | b 1 | b 2 | b 3 | b 4 |
|---|---|---|---|---|---|---|---|---|
Newsprint paper | Linear | Fixed | 0.4798 | 6.36e−03** | 3.49e−07** | – | – | – |
Quadratic | Random | 0.5198 | −1.52e−03* | 1.34e−06** | −1.80e−11* | – | – | |
Cubic | Random | 0.5195 | −1.72e−03 | 2.28e−17** | −2.01e−11** | 1.39e−06 | – | |
Logarithmic | Random | 0.4378 | −3.12e−02** | – | – | – | 4.67e−03** | |
Printing and writing paper | Linear | Fixed | 0.5858 | −3.34e−03** | 1.86e−06** | – | – | – |
Quadratic | Fixed | 0.6081 | −1.35e−02** | 3.37e−06** | −2.54e−11** | – | – | |
Cubic | Fixed | 0.6007 | −1.87e−01** | 4.51e−06** | −6.67e−11** | 4.19e−16** | – | |
Logarithmic | Fixed | 0.4625 | −1.78e−01** | – | – | – | 2.34e−02** | |
Sanitary paper | Linear | Random | 0.3677 | 1.30e−03 | 2.88e−07** | – | – | – |
Quadratic | Fixed | 0.4670 | −2.97e−03** | 8.87e−07** | −9.33e−12** | – | – | |
Cubic | Random | 0.4667 | 1.10e−03 | 1.22e−07 | 1.56e−11** | −2.37e−16** | – | |
Logarithmic | Fixed | 0.4020 | −3.78e−01** | – | – | – | 4.98e−03** | |
Wrapping paper and corrugated cardboard | Linear | Random | 0.5055 | 5.76e−03** | 1.78e−06** | – | – | – |
Quadratic | Fixed | 0.6134 | −1.40e−02** | 5.39e−06** | −5.92e−11** | – | – | |
Cubic | Fixed | 0.6144 | −1.26e−02** | 5.11e−06** | −4.94e−11** | −9.84e−17 | – | |
Logarithmic | Fixed | 0.5091 | −2.91e−02** | – | – | – | 3.76e−02** | |
Other paper and paperboard | Linear | Fixed | 0.1434 | 8.88e−03** | −9.59e−08* | – | – | – |
Quadratic | Fixed | 0.1468 | 8.95e−03** | −1.04e−07 | 1.37e−13 | – | – | |
Cubic | Random | 0.1648 | 1.53e−04 | 1.26e−06** | −4.36e−11** | 4.11e−16** | – | |
Logarithmic | Fixed | 0.1456 | 6.66e−03 | – | – | – | 9.44e−05 |