Sami-Trop: 12-lead ECG traces with age and mortality annotations

SaMi-Trop is an NIH-funded prospective cohort of 1959 patients with chronic Chagas cardiomyopathy to evaluate whether a clinical prediction rule based on ECG, brain natriuretic peptide (BNP) levels, and other biomarkers can be useful in clinical practice. A subset of the SaMi-Trop dataset with annotations of age and mortality and the correspondent ECG traces is openly available here. Contain two files `exams.csv` and `exams.hdf5`. The files contain information about the first ECG exam taken by 1631 patients. "exams.csv": is a comma-separated values (csv) file containing the columns "exam_id": id used for internal usages; "age": patient age in years at the moment the of the exam; "is_male": true if the patient is male, false if the patient is female; "normal_ecg": True if the patient has a normal ECG; "death": true if the patient dies in the follow-up time "timey": if the patient dies it is the time to the death of the patient. If not, it is the follow-up time "exams.hdf5": The HDF5 file containing a single dataset named `tracings`. This dataset is a `(1631, 4096, 12)` tensor. The first dimension corresponds to the 1631 different exams; the second dimension corresponds to the 4096 signal samples; the third dimension to the 12 different leads of the ECG exams in the following order: `{DI, DII, DIII, AVR, AVL, AVF, V1, V2, V3, V4, V5, V6}`. The signals are sampled at 400 Hz. Some signals originally have a duration of 10 seconds (10 * 400 = 4000 samples) and others of 7 seconds (7 * 400 = 2800 samples). In order to make them all have the same size (4096 samples), we fill them with zeros on both sizes. For instance, for a 7 seconds ECG signal with 2800 samples we include 648 samples at the beginning and 648 samples at the end, yielding 4096 samples that are then saved in the hdf5 dataset. <br> The relation between neural-network predicted age and mortality is established in:<br> "Deep neural network estimated electrocardiographic-age as a mortality predictor"<br> Emilly M Lima, Antônio H Ribeiro, Gabriela MM Paixão, Manoel Horta Ribeiro, Marcelo M Pinto Filho, Paulo R Gomes, Derick M Oliveira, Ester C Sabino, Bruce B Duncan, Luana Giatti, Sandhi M Barreto, Wagner Meira Jr, Thomas B Schön, Antonio Luiz P Ribeiro. MedRXiv (2021) https://www.doi.org/10.1101/2021.02.19.21251232<br> <br> The companion code can be found in: https://github.com/antonior92/ecg-age-prediction The SaMi-Trop dataset is described in: "Longitudinal study of patients with chronic Chagas cardiomyopathy in Brazil (SaMi-Trop project): a cohort profile" Clareci Silva Cardoso, Ester Cerdeira Sabino, Claudia Di Lorenzo Oliveira, Lea Campos de Oliveira, Ariela Mota Ferreira, Edécio Cunha-Neto, Ana Luiza Bierrenbach, João Eduardo Ferreira, Desirée Sant'Ana Haikal, Arthur L Reingold, Antonio Luiz P Ribeiro. BMJ Open (2016);6:e011181. doi: 10.1136/bmjopen-2016-011181