highly significantP-value = 0.012
Whereas the coefficient associated with the variable Index is only significant at 10% (P-value = 0.064), the coefficient related to Index 2 is highly significant (P-value = 0.012), and the likelihood-ratio test indicates that the model with “Index+ Index 2 ” better fits the data than the model without these two factors (P-value = 0.028).