Pain Freedom (PF) at 2 hours post-dose (Period 1, Attack 1) defined as a decrease from a moderate or severe migraine headache (Grade 2 or 3) at baseline to no pain (Grade 0). Headache severity was subjectively rated by the participant at predefined time points on a scale of Grade 0 to Grade 3: Grade 0 - No pain; Grade 1 - Mild pain; Grade 2 - Moderate Pain; and Grade 3 - Severe Pain.

The full-analysis set (FAS) included participants treated for a migraine attack. Participants had both a baseline value and at least 1 post-dose efficacy measurement for pain severity prior to, or including, the 2-hour time point. Participants were excluded from this analysis who did not have a baseline pain score or post-dose data through 2 hours.

Pain Relief (PR) at 2 hours post-dose (first migraine attack), with pain relief defined as a reduction in headache severity from Grade 3/2 at baseline to Grade 1/0 at 2 hours post-dose. Headache severity was subjectively rated by the participant at predefined time points on a scale of Grade 0 to Grade 3: Grade 0 - No pain; Grade 1 - Mild pain; Grade 2 - Moderate Pain; and Grade 3 - Severe Pain.

The FAS Population included participants treated that migraine attack, and had both a baseline value and at least 1 post-dose efficacy measurement for pain severity prior to, or including, the 2-hour time point. Participants were excluded from this analysis who did not have a baseline pain score or post-dose data through 2 hours.

An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.

All-Patients-as-Treated (APaT) population consisted of all participants who received at least 1 dose of study medication were included in the treatment group according to the medication actually received.

An AE is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.

The APaT Population consisted of all participants who received at least 1 dose of study medication were included in the treatment group according to the medication actually received.

Confirmed Vascular Event included cardiac events, cerebrovascular events, and peripheral vascular events.

The APaT Population consisted of all participants who received at least 1 dose of study medication were included in the treatment group according to the medication actually received.

The participant recorded whether phonophobia (sensitivity to sound) was present or absent at each of the predefined time points.

The FAS population included participants treated that migraine attack, and had both a baseline value and at least 1 post-dose efficacy measurement for phonophobia prior to, or including, the 2-hour time point. Participants were excluded from this analysis who did not have a baseline phonophobia score or post-dose data through 2 hours.

The participant recorded whether photophobia (sensitivity to light) was present or absent at each of the predefined time points.

The FAS population included participants treated that migraine attack, and had both a baseline value and at least 1 post-dose efficacy measurement for photophobia prior to, or including, the 2-hour time point. Participants were excluded from this analysis who did not have a baseline photophobia score or post-dose data through 2 hours.

The participant recorded whether nausea was present or absent at each of the predefined time points.

The FAS population included participants treated that migraine attack, and had both a baseline value and at least 1 post-dose efficacy measurement for nausea prior to, or including, the 2-hour time point. Participants were excluded from this analysis who did not have a baseline nausea score or post-dose data through 2 hours.

SPF from 2 to 24 hours post-dose is defined as PF at 2 hours, with no administration of either rescue medication or the optional second dose and with no occurrence thereafter of a mild/moderate/severe headache during the 2 to 24 hours after dosing with the study medication.

The FAS population was participants treated that migraine attack, and had both a baseline value and at least 1 post-dose efficacy measurement for pain severity prior to, or including, the 2-hr. time point. Participants were excluded from this analysis for not having a baseline pain score, post-dose data through 24 hrs, or a recurrence question.