highly significantp < 0.001
The likelihood ratio test for adding the Norton scale to the APACHE II model to predict post-ICU mortality was highly significant (χ 2 = 31.26; df = 1; p < 0.001).
The likelihood ratio test for adding the Norton scale to the APACHE II model to predict post-ICU mortality was highly significant (χ 2 = 31.26; df = 1; p < 0.001).