IL6 and vitamin D deficiency: In multivariable logistic regression analyses adjusted for age and sex, neuropsychiatric symptoms were independently associated with higher lymphocyte counts (aOR 1.19, 95% CI 1.12-1.51), IL-6 (aOR 1.16, 95% CI 1.10-1.86), ferritin (aOR 1.42, 95% CI 1.10-1.53), and vitamin D deficiency (aOR 1.45, 95% CI 1.22-2.01).