Table 2 The regression analysis of cognitive assessments in individuals with osteopenia in the cohort 1

Age (years)

β = 0.064

P = 0.091

β = − 0.011

P = 0.908

Sex (M / F)

β = − 0.060

P = 0.502

β = 0.019

P = 0.839

Education (years)

β = 0.006

P = 0.949

β = − 0.037

P = 0.706

BMI

β = 0.038

P = 0.675

β = 0.021

P = 0.829

BMD (g/cm²)

β = 0.320

P = 0.001

β = 0.264

P = 0.008

Plasma Aβ42/Aβ40 ratio

β =0.303

P = 0.001

β = 0.214

P = 0.032