[Sex Disparities in Treatment and Outcome of Patients with Lower Extremity Arterial Disease: A Secondary Data Analysis].

Aim Of The Study: The aim of our study was to analyse sex-specific differences in diagnosis and treatment of patients with lower extremity artery disease (LEAD) at Rutherford stage (RF) 1-3, based on secondary data. Furthermore, we focussed on the influence of the biological sex on short- and long-term outcome.

Methods: The GenderVasc project is carried out in cooperation with the AOK Research Institute (WIdO). As data basis, anonymized routine data from all insured patients of the AOK were used. All patients hospitalized due to a main diagnosis of LEAD at RF 1-3 were included and in addition to the multisectoral cross-sectional analysis, longitudinal analysis (follow-up of up to 10 years) of the health claims data was performed and evaluated.

Results: Our secondary data analysis of 42,197 patients with intermittent claudication (IC, LEAD at RF 1-3) showed that male patients were more often hospitalized due to LEAD, while women were older at time-point of index hospitalisation (female: 72.6 vs. male: 66.4 years). Fewer vascular procedures (diagnostic angiography and revascularisation) were carried out in females. Moreover, the prescription of guideline-recommended medications (statins and antithrombotic therapy) was lower in women compared to men. Multivariable Cox regression showed, after adjusting for age, cardiovascular risk profile and performed vascular procedure, that female sex was protective with respect to overall survival and progression of LEAD (progress to chronic limb-threatening ischemia or ischemic amputation).

Conclusion: In Germany, female LEAD patients were older and less likely to receive guideline-recommended therapy, while female sex is protective in terms of overall survival and progression of LEAD. The extent to which increased age or the presence of other comorbidities influence the decision for or against a vascular procedure can only be assumed from a secondary data analysis. Furthermore, the prescription of drugs in multimorbid patients is challenging and the compliance of the patients with prescribed medication intake is not part of our analysis. Nevertheless, targeted analysis, as in the GenderVasc project, are urgently needed to identify and describe differences in the medical care between the sexes.