In a univariate binary logistic regression analysis, female, NIHSS, diabetes mellitus, and FIB were risk factors of vitamin D deficiency in all patients (OR = 1.066 ∼ 1.584, P ≤ 0.001; Table 3), while the ApoA-I, ApoA-I/ApoB and HDL were protective factors (OR = 0.331 ∼ 0.569, P < 0.001; Table 3). Here, APOA1 is linked to vitamin D deficiency.