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To the Editor;
I read your letter to the editor1 with interest. Thank you for evaluating our work.2
In our study titled “Fragmented QRS as a Predictor of Cardiovascular Events in Patients with Type 2 Diabetes Mellitus: A 36-Month Follow-Up Data”2 cardiovascular events occurred within 36 months in type 2 diabetic patients without previous cardiovascular disease, according to the presence of fragmented QRS (fQRS). In this study, the development of the event was examined. Since our research is a survive study, Cox-regression analysis was used instead of logistic regression analysis. There is a 10 to 1 rule in logistic regression analyses, but this rule is not mentioned for the Cox regression model. Similar to our study, Lustosa et al3 published a study in circulation. In their study, while 36 data were given in the table, univariate and multivariant Cox regression analysis was performed with 16 data. In this study, similar to ours, the 1 to 10 rule was not applied.
Additionally, Kaplan–Meier analysis was performed in our study and the
References
- Erdoğan M. More accurate impact of as an independent. Anatol J Cardiol. 2024;():000-000.
- Çetin Ş, Bayraktar A, Demiröz Ö, Karabay KÖ, Yalçınkaya E. Fragmented QRS as a predictor of cardiovascular events in patients with type 2 diabetes mellitus: a 36-month follow-up data. Anatol J Cardiol. 2024;28(4):208-212. https://doi.org/10.14744/AnatolJCardiol.2024.3744
- Lustosa RP, Butcher SC, van der Bijl P. Global left ventricular myocardial work efficiency and long-term prognosis in patients after ST-segment-elevation myocardial infarction. Circ Cardiovasc Imaging. 2021;14(3):e012072-. https://doi.org/10.1161/CIRCIMAGING.120.012072