The training set consists of 60 records selected from the MIMIC II Database. Each record belongs to one of four groups as shown below. For each record, the table below lists the MIMIC II Clinical Database subject name, the corresponding MIMIC II Waveform Database waveform and numerics record names, T0 (which would be the time of the end of the record if it were part of the test set), and the sex and age of the subject. As part of the de-identification process, we have replaced all dates in these records with surrogate dates, most of which (for the next several years, at least) are in the future.
Update (24 August 2009): Ages for all subjects in the MIMIC II Database are available here; Franco Chiarugi pointed out that these were inconsistent with those originally given on this page. The table below has now been corrected.
The object of the challenge is to use information available before T0 to predict if the patient will have an acute hypotensive episode (AHE) that begins during the forecast window (the hour following T0). In this training set, all available information gathered after T0 is provided, and the AHE of interest (if present) begins midway through the forecast window, about 30 minutes after T0.
Individual clinical, waveform, and numerics records belonging to the training set can be accessed by following the links in the tables below. (If you are using one of the PhysioNet mirrors and the links don't work, please try another mirror or the master PhysioNet server at MIT. For convenience, all of the clinical records in the training set can be downloaded as a tarball (about 27 Mb; for information on unpacking tarballs, see the PhysioNet FAQ). The waveform and numerics records are much larger; you may wish to explore them using WFDB software to read regions of interest directly from the PhysioNet server rather than downloading them in their entirety. If you decide to download these records, the PhysioBank ATM can provide tarballs or zip files of each record; it can also generate .mat files (for Matlab or Octave) of segments of up to one million samples (about 2 hours and 20 minutes of a waveform record, or, in most cases, an entire numerics record).
A set of plots illustrating mean ABP for each record is available as a tarball (about 14 Mb), or individual plots can be viewed here. Both thumbnails in .png format and highly detailed but much larger .pdf plots are provided. To make them easily comparable, all records are plotted to the same scales, (0 to 200 hours elapsed time, 0 to 200 mmHg), but some of these records are shorter and others are considerably longer than 200 hours. The mean ABP in these plots comes from the low-resolution time series of ABP measurements made once per minute provided in the "numerics record" associated with each waveform record; in each plot, 0 on the time axis corresponds to the beginning of the numerics records. The clinical, waveform, and numerics records generally do not begin at the same time; to find T0 on a plot, compare it with the start time of the numerics record. Find any record's start time in the first line of its header (.hea) file, use wfdbdesc to do so if you have installed the WFDB software package, or use the PhysioBank ATM.
In many cases mean ABP is not available for the first few hours of the record, and there may be occasional gaps later on, but records with significant gaps after the ABP first becomes available were excluded.
For additional information, see the Challenge home page, the MIMIC II home page, and our tutorial, Using the MIMIC II Database.
Group H1 (acute hypotensive episode in forecast window, treated with pressors)
clinical record |
waveform record |
numerics record |
T0 surrogate date/time |
sex/age |
---|---|---|---|---|
s21775 | a40439 | a40439n | 04/09/2008 18:30 | M 75 |
s20658 | a40493 | a40493n | 20/07/2016 08:00 | F 72 |
s22466 | a40764 | a40764n | 01/09/2013 11:20 | F 76 |
s05336 | a40834 | a40834n | 01/06/2011 21:00 | M 40 |
s06349 | a40928 | a40928n | 15/07/2010 19:20 | F 89 |
s08718 | a41200 | a41200n | 08/04/2015 20:05 | M 88 |
s20794 | a41447 | a41447n | 19/10/2014 09:10 | M 85 |
s24799 | a41770 | a41770n | 24/11/2009 09:50 | M 66 |
s26318 | a41835 | a41835n | 04/01/2012 09:45 | M 65 |
s14204 | a41882 | a41882n | 13/10/2013 12:30 | F 89 |
s25699 | a41925 | a41925n | 22/09/2012 13:40 | M 35 |
s07125 | a42277 | a42277n | 12/09/2017 21:40 | M 53 |
s19208 | a42397 | a42397n | 18/10/2010 11:55 | F 78 |
s12821 | a42410 | a42410n | 24/09/2015 13:10 | F 77 |
s06637 | * | a42928n | 05/11/2011 12:40 | M 78 |
Group H2 (AHE in forecast window, not treated with pressors)
clinical record |
waveform record |
numerics record |
T0 surrogate date/time |
sex/age |
---|---|---|---|---|
s02395 | a40006 | a40006n | 03/06/2011 21:15 | F 80 |
s08779 | a40012 | a40012n | 11/11/2014 02:45 | M 58 |
s23641 | a40050 | a40050n | 03/07/2014 17:20 | M 90+ |
s24924 | a40051 | a40051n | 13/04/2014 16:50 | F 79 |
s00439 | a40064 | a40064n | 15/01/2013 08:30 | F 82 |
s23015 | a40076 | a40076n | 09/07/2012 06:05 | M 68 |
s19603 | a40096 | a40096n | 21/11/2008 12:25 | F 75 |
s02172 | a40099 | a40099n | 22/10/2014 22:15 | M 32 |
s26105 | a40113 | a40113n | 16/09/2016 09:35 | M 47 |
s23594 | a40119 | a40119n | 29/05/2010 19:35 | F 66 |
s21817 | a40125 | a40125n | 11/08/2012 16:55 | F 73 |
s24984 | a40127 | a40127n | 12/09/2009 09:20 | M 56 |
s25602 | a40154 | a40154n | 13/12/2009 04:10 | F 77 |
s23591 | a40164 | a40164n | 04/10/2015 12:00 | M 85 |
s15687 | a40172 | a40172n | 03/11/2015 02:20 | F 90+ |
Group C1 (records not containing acute hypotensive episodes)
clinical record |
waveform record |
numerics record |
T0 surrogate date/time |
sex/age |
---|---|---|---|---|
s17765 | a40282 | a40282n | 30/06/2016 20:00 | M 51 |
s04860 | a40473 | a40473n | 27/03/2010 21:40 | F 57 |
s26097 | a40551 | a40551n | 05/04/2014 13:00 | F 42 |
s00318 | a40802 | a40802n | 15/07/2009 19:15 | M 58 |
s14495 | a40921 | a40921n | 06/10/2015 09:00 | M 59 |
s22888 | a41137 | a41137n | 07/08/2015 22:35 | M 48 |
s26296 | a41177 | a41177n | 01/03/2017 22:20 | M 47 |
s06180 | * | a41385n | 10/11/2008 20:30 | F 45 |
s07468 | a41434 | a41434n | 03/09/2012 16:30 | F 71 |
s24004 | a41466 | a41466n | 23/06/2010 04:45 | M 66 |
s03133 | a41495 | a41495n | 27/06/2015 22:00 | M 46 |
s02280 | a41664 | a41664n | 20/01/2016 18:10 | M 58 |
s09672 | a41934 | a41934n | 30/07/2015 23:05 | F 46 |
s19418 | a42141 | a42141n | 07/01/2011 15:10 | F 39 |
s15465 | a42259 | a42259n | 01/02/2013 00:25 | M 67 |
Group C2 (AHE, but not in forecast window)
clinical record |
waveform record |
numerics record |
T0 surrogate date/time |
sex/age |
---|---|---|---|---|
s05786 | a40207 | a40207n | 31/10/2012 06:20 | M 54 |
s25222 | a40215 | a40215n | 21/09/2012 23:00 | F 60 |
s02561 | a40225 | a40225n | 25/10/2012 14:00 | F 81 |
s24923 | a40234 | a40234n | 12/12/2008 23:00 | F 82 |
s16019 | a40260 | a40260n | 24/03/2015 09:15 | F 90+ |
s04286 | a40264 | a40264n | 28/10/2016 21:00 | M 61 |
s17069 | a40277 | a40277n | 05/03/2016 05:00 | F 61 |
s07860 | a40306 | a40306n | 28/08/2009 09:00 | F 36 |
s23020 | a40329 | a40329n | 22/05/2014 18:00 | F 84 |
s24431 | a40355 | a40355n | 21/09/2010 13:00 | M 22 |
s22657 | a40374 | a40374n | 25/08/2012 06:45 | M 88 |
s09341 | a40376 | a40376n | 05/05/2011 01:25 | F 62 |
s05126 | a40384 | a40384n | 21/07/2009 14:15 | F 69 |
s10611 | a40408 | a40408n | 26/06/2012 15:50 | M 78 |
s05289 | a40424 | a40424n | 10/12/2010 18:10 | M 76 |
* There are no high-resolution signals available for record a42928 (only once-per-minute time series of derived measurements). Technical limitations of the data acquisition process occasionally do not permit recording the high-resolution signals, although the derived measurements can be recorded, as happened in this case.
This situation also occurred during the recording of record a41385, during which the high-resolution signals were recorded only for a very brief interval (less than a minute).