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Table 1 Research questions. Overview of the clinical research questions

From: Is OpenSDE an alternative for dedicated medical research databases? An example in coronary surgery

  Query name
Q1 How many endarterectomies are performed in 1, 2 and 3 vessel diseased patients
Q2 What is the mean age of patients who underwent only venous revascularization
Q3 What is the number of patients older than 65 years only arterial revascularised as a percentage of the total number of patients.
Q4 Male/Female ratio
Q5 What is the number of complications per operation location.
Q6 What is the number of patients with left main- and 3 vessel disease
Q7 What is the percentage of patients in each hospital with diabetes (Erasmus MC, MCRZ).
Q8 What is the average amount of distal anastomoses per operation.
Q9 What is the number of 1, 2 and 3 vessel diseased patients in Erasmus MC and MCRZ.