Table 1

Number of included journals and studies per field

Journal fieldNumber of journalsNumber of studies
Allergy11
Anesthesiology14
Cardiac & Cardiovascular Systems716
Clinical Neurology11
Endocrinology & Metabolism37
Gastroenterology & Hepatology413
Immunology14
Medicine, General & Internal624
Oncology14
Orthopedics28
Pediatric Critical Care Medicine12
Sports Sciences12
Surgery613
Urology & Nephrology520
Grand total40119