Table 3. Statistic of predictive power and goodness-of-fit test in step-by-step regression analysis.
Determination coefficient (R2N) | Goodness-of-fit | |||||
---|---|---|---|---|---|---|
Order in analysis | Cumulat. | Single | % relative | H-L test | % cases | Pearson |
Physical activity | 0.040 | 0.040 | 10.0 | 0.353 | 46.4 | 0.030 |
Socio-demographic | 0.203 | 0.163 | 40.9 | 0.149 | 66.7 | 0.479 |
Age | 0.177 | 0.137 | 34.3 | 0.429 | 54.0 | - |
Sex | 0.182 | 0.005 | 1.3 | 0.065 | 68.2 | - |
Education | 0.195 | 0.013 | 3.3 | 0.061 | 68.0 | - |
Housekeeper | 0.203 | 0.008 | 2.0 | 0.149 | 66.7 | - |
Lifestyle | 0.215 | 0.012 | 3.0 | 0.481 | 68.0 | 0.615 |
TV watching | 0.208 | 0.005 | 1.3 | 0.356 | 67.4 | - |
Sleep | 0.211 | 0.003 | 0.8 | 0.284 | 67.5 | - |
Nap | 0.211 | 0.000 | 0.0 | 0.211 | 67.7 | - |
Smoker | 0.215 | 0.003 | 0.8 | 0.391 | 68.0 | - |
Alcohol | 0.215 | 0.000 | 0.0 | 0.481 | 68.0 | - |
Family history | 0.221 | 0.006 | 1.5 | 0.167 | 67.9 | 0.530 |
BMI | 0.399 | 0.178 | 45.1 | 0.141 | 74.9 | 0.968 |
Total | 0.399 | 0.399 | 100 | 0.141 | 74.9 | 0.968 |
R2N = Nagelkerke pseudo R2; H-L test = p-value of Hosmer and Lemeshow test; % cases = percentage of correctly predicted cases; Pearson = p-value of Pearson χ2 test.