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

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 2^t 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