Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] every other week). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] every week). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after second flare.

Subcutaneous (SC) injection

The FMS ranges from 0 (normal or inactive disease) to 12 (severe disease) and is calculated as the sum of 4 subscores (stool frequency, rectal bleeding, endoscopy, and physician's global assessment), each of which ranges from 0 (normal) to 3 (severe disease). The PMS (Mayo score without endoscopy) ranges from 0 (normal or inactive disease) to 9 (severe disease) and is calculated as the sum of 3 subscores (stool frequency, rectal bleeding and physician's global assessment). Negative changes indicate improvement. PMS responders are defined as those participants with a decrease in PMS ≥ 2 points and ≥ 30% from Baseline. Mucosal healing per Mayo endoscopy subscore is defined as a subscore of ≤ 1.

The FMS ranges from 0 (normal or inactive disease) to 12 (severe disease) and is calculated as the sum of 4 subscores (stool frequency, rectal bleeding, endoscopy, and physician's global assessment), each of which ranges from 0 (normal) to 3 (severe disease). The PMS (Mayo score without endoscopy) ranges from 0 (normal or inactive disease) to 9 (severe disease) and is calculated as the sum of 3 subscores (stool frequency, rectal bleeding and physician's global assessment). Negative changes indicate improvement. PMS remitters are defined as those participants with a PMS ≤ 2 and no individual subscore > 1. Clinical remission per FMS is defined as Mayo Score ≤ 2 and no individual subscore > 1.

The FMS ranges from 0 (normal or inactive disease) to 12 (severe disease) and is calculated as the sum of 4 subscores (stool frequency, rectal bleeding, endoscopy, and physician's global assessment), each of which ranges from 0 (normal) to 3 (severe disease). The PMS (Mayo score without endoscopy) ranges from 0 (normal or inactive disease) to 9 (severe disease) and is calculated as the sum of 3 subscores (stool frequency, rectal bleeding and physician's global assessment). Negative changes indicate improvement. PMS responders are defined as those with a decrease in PMS ≥ 2 points and ≥ 30% from baseline. Among participants receiving systemic corticosteroids at Baseline, corticosteroid-free clinical remission per FMS at Week 52 is defined as having discontinued systemic corticosteroids prior to Week 52 and being in FMS clinical remission at Week 52 (defined as Mayo Score ≤ 2 and no individual subscore > 1).

(After Amendment 4) participants assigned to open-label adalimumab 2.4 mg/kg (maximum dose of 160 mg) at Baseline and at Week 1, 1.2 mg/kg (maximum dose of 80 mg) at Week 2, followed by 0.6 mg/kg (maximum dose of 40 mg) at Week 4 and Week 6.

(Prior to Amendment 4) participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to maintenance placebo. Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] every other week [eow]). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] every week [ew]). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Efficacy analysis was based on the Intent-To-Treat-Efficacy (ITT-E) population for the induction period. The ITT-E population was a subpopulation of the ITT population, which consisted of all participants who received at least one SC injection of the study medication during the induction period. Participants who received open-label high induction dose, because they enrolled after Protocol Amendment 4 was released, were excluded from the ITT-E population.

controlling familywise Type I error of 5% in a strong sense

Adjusted p-value from a sequentially rejective multiple test procedure, testing co-primary and ranked secondary endpoints 1st for I-SD+I-HD, then for individual adalimumab dose groups (I-HD, I-SD) against the respective external placebo rate (19.83%)

one-sample two-sided Chi-square test

Efficacy analysis was based on the Intent-To-Treat-Efficacy (ITT-E) population for the induction period. The ITT-E population was a subpopulation of the ITT population, which consisted of all participants who received at least one SC injection of the study medication during the induction period. Participants who received open-label high induction dose, because they enrolled after Protocol Amendment 4 was released, were excluded from the ITT-E population.

controlling familywise Type I error of 5% in a strong sense

Adjusted p-value from a sequentially rejective multiple test procedure, testing co-primary and ranked secondary endpoints 1st for I-SD+I-HD, then for individual adalimumab dose groups (I-HD, I-SD) against the respective external placebo rate (19.83%)

one-sample two-sided Chi-square test

Efficacy analysis was based on the Intent-To-Treat-Efficacy (ITT-E) population for the induction period. The ITT-E population was a subpopulation of the ITT population, which consisted of all participants who received at least one SC injection of the study medication during the induction period. Participants who received open-label high induction dose, because they enrolled after Protocol Amendment 4 was released, were excluded from the ITT-E population.

controlling familywise Type I error of 5% in a strong sense

Adjusted p-value from a sequentially rejective multiple test procedure, testing co-primary and ranked secondary endpoints 1st for I-SD+I-HD, then for individual adalimumab dose groups (I-HD, I-SD) against the respective external placebo rate (19.83%)

one-sample two-sided Chi-square test

Efficacy analysis was based on the Intent-To-Treat-Efficacy (ITT-E) population for the induction period. The ITT-E population was a subpopulation of the ITT population, which consisted of all participants who received at least one SC injection of the study medication during the induction period. Participants who received open-label high induction dose, because they enrolled after Protocol Amendment 4 was released, were excluded from the ITT-E population.

controlling familywise Type I error of 5% in a strong sense

Adjusted p-value from a sequentially rejective multiple test procedure, testing co-primary and ranked secondary endpoints 1st for I-SD+I-HD, then for individual adalimumab dose groups (I-HD, I-SD) against the respective external placebo rate (19.83%)

one-sample two-sided Chi-square test

Efficacy analysis was based on the Intent-To-Treat-Efficacy (ITT-E) population for the induction period. The ITT-E population was a subpopulation of the ITT population, which consisted of all participants who received at least one SC injection of the study medication during the induction period. Participants who received open-label high induction dose, because they enrolled after Protocol Amendment 4 was released, were excluded from the ITT-E population.

controlling familywise Type I error of 5% in a strong sense

Adjusted p-value from a sequentially rejective multiple test procedure, testing co-primary and ranked secondary endpoints 1st for I-SD+I-HD, then for individual adalimumab dose groups (I-HD, I-SD) against the respective external placebo rate (19.83%)

one-sample two-sided Chi-square test

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] eow). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] ew). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Combined M-SD + M-HD arms (see above).

(Prior to Amendment 4) participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to maintenance placebo. Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label adalimumab rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] eow). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] ew). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Combined M-SD + M-HD arms (see above).

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] eow). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] ew). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Combined M-SD + M-HD arms (see above).

(Prior to Amendment 4) participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to maintenance placebo. Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label adalimumab rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] eow). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] ew). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Combined M-SD + M-HD arms (see above).

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance high dose (0.6 mg/kg [maximum dose of 40 mg] ew). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.

Combined M-SD + M-HD arms (see above).

(Prior to Amendment 4) participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to maintenance placebo. Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label adalimumab rescue therapy after the second flare.

Participants demonstrating a clinical response per PMS (defined as a decrease in PMS ≥ 2 points and ≥ 30% from Baseline) at Week 8 randomized to adalimumab maintenance standard dose (0.6 mg/kg [maximum dose of 40 mg] eow). Participants were to continue their blinded treatment during the maintenance period until Week 52 unless they had ≥ 2 flares and got open label rescue therapy after the second flare.