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Table 1 All groups created in the study for stratification and analysis

From: The timing of administering aspirin and nitroglycerin in patients with STEMI ECG changes alter patient outcome

Group Explanation
A1 NTG given 1st minute after aspirin
A2 NTG given between 1st and 2nd minute after aspirin
A3 NTG given between 2st and 3rd minute after aspirin
A4 NTG given between 3rd and 4th minute after aspirin
A5 NTG given between 4th and 5th minute after aspirin
A6 NTG given between 5th and 7th minute after aspirin
A7 NTG given between 7th and 9th minute after aspirin
A8 NTG given between 9th and 12th minute after aspirin
A9 All NTG given 12th minute after aspirin
N1 2nd NTG given within 2t minutes after the first (or aspirin was given)
N2 2nd NTG (or aspirin) given between 2 and 4 min after the first NTG
N3 2nd NTG (or aspirin) given between 4 and 6 min after the first NTG
N4 2nd NTG (or aspirin) given between 6 and 8 min after the first NTG
N5 All cases where 2nd NTG (or aspirin) was given after 8 min after the first NTG