showed a trendp = 0.099
Association of serum BDNF level with AST/ALT ratio and FIB-4 index After adjusting for age, serum BDNF levels were significantly associated with the FIB-4 index (β = -6.439, 95% CI -11.067 to -1.810, p = 0.007) and showed a trend of association with the AST/ALT ratio (β = -4.554, 95% CI -9.990 to 0.882, p = 0.099) ( Table 3 , Model 1).