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Chi-square test for coefficient significance analysis, Nalgelkerk R2 and Hosmer–Lemeshow tests for adjustment analysis of the multivariate logistic regression model of all studied variables
| Model | Chi-square test “p value” | Hosmer–Lemeshow test “p value” | Nagelkerk R2 |
|---|---|---|---|
| USA | 0.000 | 0.080 | 0.88 |
| Italy | 0.000 | 0.784 | 0.87 |
| Spain | 0.000 | 0.435 | 0.88 |
| Germany | 0.000 | 0.052 | 0.86 |
