Poor quality of sleep in Mexican patients with type 2 diabetes and its association with lack of glycemic control

Aims: To determine the association between sleep quality and lack of glycemic control in a Mexican population of type 2 diabetes patients.Methods: Cross-sectional study. Two hundred two patients between 20 and 60 years old with a previous diagnosis of diabetes were included. Sleep quality was assessed with the Pittsburgh Sleep Quality Index and lack of gly-cemic control as a glycated hemoglobin A1c level >= 7 %. Univariate and multivariate analyses using logistic regression were performed.Results: The study population showed poor sleep quality and a lack of glycemic control of 70.3 % and 69.8 %, respectively. The prevalence of patients with both conditions was 52.5 %. In multivariate analysis, poor sleep quality was significantly associated with a lack of glycemic control (OR = 2.3, p = 0.030). Other associated variables were napping (p = 0.015), diabetes duration (p = 0.011), insulin use (p = 0.024), and diastolic blood pressure >= 85 mmHg (p = 0.029).Conclusions: The prevalence of lack of glycemic control in the study population is high. Poor sleep quality significantly doubles the risk of lack of glycemic control, even in the presence of other risk factors.