A Proportional Odds Model of Particle Pollution
Abstract
:1. Introduction
2. Linear Regression
3. Ordered Logistic Regression
= 1/[1 + exp (−ki + β1x1 + β2x2 + … + βkxk)]
− 1/[1 + exp (−ki−1 + β1x1 + β2x2 + … + βkxk)]
4. Comparison and Contrast
Outcomes | Unhealthy | USG | Moderate | Good | Total |
---|---|---|---|---|---|
Good | 0 | 0 | 315 | 645 | 960 |
Moderate | 0 | 7 | 624 | 102 | 733 |
USG | 0 | 9 | 26 | 1 | 36 |
Unhealthy | 0 | 0 | 2 | 0 | 2 |
Total | 0 | 16 | 967 | 748 | 1731 |
Outcomes | Unhealthy | USG | Moderate | Good | Total |
---|---|---|---|---|---|
Good | 0 | 0 | 218 | 819 | 1037 |
Moderate | 1 | 7 | 565 | 219 | 792 |
USG | 0 | 9 | 29 | 2 | 40 |
Unhealthy | 0 | 0 | 2 | 0 | 2 |
Total | 1 | 16 | 814 | 1040 | 1871 |
Outcomes | Regress | OLOGIT |
---|---|---|
Good | 645/960 = 67.2% | 819/1037 = 79.0% |
Moderate | 624/733 = 85.2% | 565/792 = 71.3% |
USG | 9/36 = 25% | 9/40 = 22.5% |
Unhealthy | 0/2 = 0% | 0/2 = 0% |
Total | 1278/1731 = 73.83% | 1393/1871 = 74.45% |
5. Conclusions
Author Contributions
Conflicts of Interest
References
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Chimka, J.R.; Ozdemir, E. A Proportional Odds Model of Particle Pollution. Environments 2014, 1, 54-59. https://doi.org/10.3390/environments1010054
Chimka JR, Ozdemir E. A Proportional Odds Model of Particle Pollution. Environments. 2014; 1(1):54-59. https://doi.org/10.3390/environments1010054
Chicago/Turabian StyleChimka, Justin R., and Ege Ozdemir. 2014. "A Proportional Odds Model of Particle Pollution" Environments 1, no. 1: 54-59. https://doi.org/10.3390/environments1010054