Limitations
A limited number of patients could be included in the study. Only the evaluation of patients referred to the cardiology unit and all patients’ failure to come due to the Covid-19 pandemic process; patients included in the study may not reflect the targeted population.
Considering the study groups’ basal characteristics, the differences in diastolic blood pressure and triglyceride levels might affect the investigation results, even if the relevant parameters are found in the standard reference range. Similarly, vitamin B12 levels were within the normal reference range in the patient group with and without insulin resistance; it was significantly lower in patients with insulin resistance than those without insulin resistance and control. This difference may have affected the results.