RESUMO
Social jetlag (SJL) has been linked to many cardiovascular and metabolic diseases, as it disturbs the circadian rhythm. In this study, we analyzed the impact of SJL on glycemic control. To our knowledge, this was the first study that discussed the issue of SJL, and we explored the prevalence of SJL in the studied population. A case-control study matched by age and gender was conducted among 511 subjects. Control group subjects were diabetic with HbA1c levels of <7.5%, while our cases were diabetic with HbA1c levels of 7.5% or more. We used the Munich Chronotype Questionnaire (MCTQ) to assess SJL among the participants. Based on our findings, SJL status was similar for both cases and control participants, which indicates that there is no significant association between SJL and HbA1c levels (p=0.394). The prevalence of SJL in the studied population was 58.4%. Further studies are required to obtain a more precise estimation of sleep duration and SJL, and they should focus on SJL and its related problems.