highly significantP < 0.001
When the AAR was also modeled as a categorical variable in the Cox regression model adjusted for age, sex, and BMI (with AAR =1 as the reference category), the ARR <1 showed an HR value of 1.52 (CI 95%, 0.82–2.80) for all-cause mortality, while the AAR >1 showed an HR value of 2.50 (CI 95%, 1.34–4.64) that was highly significant ( P < 0.001). 4.