Serum IL-6 was also statistically significantly higher among patients with schizophrenia in both the crude (β =2.86, 95% CI = 1.11, 4.62, p = 0.001) and the adjusted (β =3.60, 95% CI: 1.35, 5.86, p = 0.002) models (Tables 2 and 3). This evidence concerns the gene IL6 and schizophrenia.