KL and Hypertension: In the fully adjusted model (Model 2), which accounted for age, sex, smoking, creatinine, klotho, hypertension, and dysglycemia, each log2-unit increase in serum butyraldehyde was associated with a 36.7% reduction in the odds of AAC (adjusted OR = 0.633; 95% CI 0.436–0.930; p = 0.016) (Table 3).