The multivariate analysis (Table 4) highlights an increased risk of NI for patients in blood group 0 (OR = 3.8, p = 0.02), in the case of patients with LH ≥ 14 days (OR = 6.7, p < 0.01) and in the presence of anemia (OR = 2.5, p = 0.04). This evidence concerns the gene PLOD1 and anemia (phenotype).