Datasets usually provide raw data for analysis. This raw data often comes in spreadsheet form, but can be any collection of data, on which analysis can be performed.
Abbreviations: BMI, body mass index; NYHA class, New York Health Association class of the severity of heart failure; STS score, Society of Thoracic Surgeons risk score of perioperative mortality and morbidity; GCS, Glasgow Coma Scale.
Values are presented as median (Q1; Q3) and n (%).
*significant difference (Mann-Whitney Rank Sum Test).