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. Author manuscript; available in PMC: 2021 Mar 2.
Published in final edited form as: J Alzheimers Dis. 2020;77(3):1279–1289. doi: 10.3233/JAD-191247

Table 4.

Linear regression results for the association between leptin and verbal memory, stratified by BMI category.

Body Mass Index N Beta (SE) P-value P-value for interaction between leptin and BMI category
18.5–24.9 kg/m2 708 0.12 (0.052) 0.022 0.028
25.0–29.9 kg/m2 740 −0.060 (0.054) 0.27
≥30 kg/m2 466 −0.095 (0.075) 0.20

Abbreviations: SE, standard error; kg, kilogram; m, meter

Note: Leptin is natural log-transformed and standardized within each sex. Verbal memory is expressed per standard deviation increment of age/education-adjusted residuals. Models are adjusted for age at NP, sex, education group (≤High school degree, some college, ≥college degree), systolic blood pressure, ln-insulin, ln-fasting blood glucose, and years between clinic exam and NP.