The table below indicates reference ranks and sources for each record in the T-Wave Alternans Challenge Database (twadb). Column 1 is the name of the record within the twadb. Column 2 is the reference rank derived from the ranks assigned by challenge entries. High ranks correspond to records with larger amounts of TWA. (Thus the record judged to contain the most TWA has a rank of 100, etc.) Column 3 specifies the data collection from which each record originates, which is one of: inc St. Petersburg Institute of Cardiological Technics 12-lead Arrhythmia Database lts Long-Term ST Database nsr MIT-BIH Normal Sinus Rhythm Database ptb PTB Diagnostic ECG Database (patients) ptbc PTB Diagnostic ECG Database (healthy subjects) sdd Sudden Cardiac Death Holter Database syn synthesized ECGs with TWA sync synthesized ECGs without TWA Column 4 is the name of the original record from which the twadb record was extracted. twadb ref. source source record rank type record name twa00 1 sdd sddb/30 twa02 2 sdd sddb/52 twa04 3 lts ltstdb/s30801 twa05 4 sdd sddb/52 twa07 5 lts ltstdb/s30771 twa08 6 sdd sddb/31 twa10 7 nsr nsrdb/19090 twa11 8 ptb ptbdb/patient049/s0178lre twa12 9 inc incartdb/I24 twa16 10 inc incartdb/I67 twa14 11 lts ltstdb/s30761 twa20 12 ptb ptbdb/patient093/s0371lre twa23 13 nsr nsrdb/19830 twa18 14 ptb ptbdb/patient043/s0141lre twa24 15 inc incartdb/I12 twa26 16 inc incartdb/I40 twa22 17 sdd sddb/34 twa32 18 lts ltstdb/s30761 twa27 19 inc incartdb/I40 twa38 20 ptb ptbdb/patient080/s0315lre twa19 21 ptb ptbdb/patient049/s0186lre twa39 22 ptbc ptbdb/patient243/s0472_re twa40 23 ptb ptbdb/patient038/s0125lre twa31 24 ptb ptbdb/patient043/s0278lre twa41 25 ptb ptbdb/patient038/s0128lre twa45 26 sdd sddb/31 twa28 27 syn stwdb/c101 twa42 28 ptb ptbdb/patient049/s0314lre twa30 29 syn stwdb/d101 twa36 30 ptb ptbdb/patient093/s0396lre twa43 31 lts ltstdb/s30721 twa44 32 inc incartdb/I25 twa46 33 ptbc ptbdb/patient245/s0480_re twa35 34 syn stwdb/e101 twa37 35 lts ltstdb/s30742 twa47 36 ptb ptbdb/patient004/s0020bre twa48 37 ptb ptbdb/patient049/s0173lre twa49 38 ptb ptbdb/patient043/s0144lre twa53 39 ptb ptbdb/patient058/s0216lre twa54 40 ptb ptbdb/patient291/s0554_re twa56 41 inc incartdb/I24 twa25 42 syn stwdb/e102 twa55 43 ptbc ptbdb/patient247/s0479_re twa61 44 nsr nsrdb/16420 twa60 45 ptbc ptbdb/patient255/s0491_re twa57 46 lts ltstdb/s30771 twa59 47 sdd sddb/45 twa58 48 inc incartdb/I12 twa52 49 sync stwdb/f001 twa62 50 nsr nsrdb/16539 twa03 51 ptb ptbdb/patient093/s0367lre twa63 52 sdd sddb/30 twa65 53 ptb ptbdb/patient004/s0020are twa71 54 nsr nsrdb/19088 twa74 55 inc incartdb/I67 twa66 56 ptb ptbdb/patient093/s0378lre twa77 57 lts ltstdb/s30721 twa85 58 lts ltstdb/s30741 twa68 59 sdd sddb/34 twa78 60 syn stwdb/b101 twa75 61 ptb ptbdb/patient056/s0196lre twa80 62 lts ltstdb/s30742 twa90 63 ptbc ptbdb/patient239/s0467_re twa83 64 ptb ptbdb/patient093/s0375lre twa76 65 syn stwdb/a101 twa84 66 inc incartdb/I25 twa86 67 ptb ptbdb/patient273/s0511_re twa92 68 lts ltstdb/s30741 twa64 69 syn stwdb/a102 twa87 70 ptb ptbdb/patient038/s0162lre twa89 71 lts ltstdb/s30801 twa69 72 syn stwdb/c102 twa94 73 ptb ptbdb/patient080/s0261lre twa67 74 syn stwdb/d103 twa70 75 syn stwdb/d104 twa93 76 nsr nsrdb/16773 twa17 77 syn stwdb/b107 twa88 78 syn stwdb/c103 twa95 79 sdd sddb/45 twa96 80 ptb ptbdb/patient080/s0265lre twa99 81 ptbc ptbdb/patient242/s0471_re twa15 82 syn stwdb/c108 twa51 83 syn stwdb/a104 twa82 84 syn stwdb/e104 twa81 85 sync stwdb/f000 twa98 86 syn stwdb/b103 twa06 87 syn stwdb/d109 twa21 88 syn stwdb/d105 twa33 89 syn stwdb/b105 twa13 90 syn stwdb/e112 twa01 91 syn stwdb/c111 twa09 92 syn stwdb/d110 twa50 93 syn stwdb/a108 twa91 94 syn stwdb/c112 twa79 95 syn stwdb/a110 twa97 96 syn stwdb/b109 twa29 97 syn stwdb/b111 twa73 98 syn stwdb/e107 twa72 99 syn stwdb/e109 twa34 100 syn stwdb/a112