Multivariable logistic regression analysis included the variables demonstrating a P level < 0.05 in the univariable analysis, and indicated that serum SHBG levels (OR = 1.04, 95% CI: 1.02–1.06, P < 0.001), HbA1c (OR = 1.28, 95% CI: 1.11–1.46, P < 0.001), and hemoglobin levels (OR = 0.96, 95% CI: 0.94–0.98, P < 0.001) were independently associated with the risk of malnutrition exposure (Table 4). This evidence concerns the gene SHBG and malnutrition.