MIF and schizophrenia: In addition, one study with older participants, including 86 patients with schizophrenia (mean age ± SD, 54.3 ± 10.3 years) and 51 controls (48.4 ± 9.5 years), observed that MIF levels were unrelated to the schizophrenia group when compared to the control group [41] after regression analyses, which is consistent with our findings.