A Study To Evaluate The Efficacy Of Enbrel (REGISTERED) Etanercept Over A Period Of 12 Months In The Routine Treatment Of Patients With Rheumatoid Arthritis, Axial Spondyloarthritis, Psoriatic Arthritis, Or Plaque Psoriasis.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. A serious adverse event (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. TEAEs were measured up to Week 12, 24, 36 and 52 of exposure with study drug that were absent before treatment or that worsened relative to pretreatment state. TEAEs included both SAEs and non-SAEs.

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. A SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. TEAEs were measured up to Week 12, 24, 36 and 52 of exposure with study drug that were absent before treatment or that worsened relative to pretreatment state. TEAEs included both SAEs and non-SAEs.

DAS28 calculated as average of from SJC and TJC using the 28 joints count, ESR (mm/h), PtGA of disease activity (recorded on a VAS scale of 0 mm-100 mm, where 0 = no disease activity and 100=high disease activity). DAS28<2.6 = remission, DAS28 <=3.2 = low disease activity, DAS28 >3.2 to 5.1 = moderate to high disease activity. Participants who had DAS28 <= 2.6 were considered in remission.

Participants answered question: "How do you assess your current disease activity?" Participants responded by using a 0 - 100 mm visual analog scale where 0 mm = no activity and 100 mm = highest possible activity.

Participants assessed their fatigue using a 0 - 100 mm VAS, where 0 mm = no fatigue and 100 mm = worst possible fatigue.

Participants assessed pain using a 0 mm - 100 mm VAS scale where 0 mm = minimum possible pain (best) and 100 mm = maximum possible pain (worst).

PGA of Disease Activity was measured on a 0 to 100 mm VAS, with 0 mm = no disease activity; 100 mm= high disease activity.

The PHQ-2 is a brief depression screening instrument and enquire two factors: frequency of depressed mood and anhedonia (inability to feel pleasure in normally pleasurable activities) over the past 2 weeks, scoring each question on scale of 0 ("not at all") to 3 ("nearly every day"). Total PHQ-2 score ranged from 0-6 (0 indicate not at all: depression/anhedonia can be ruled out; 6 indicate nearly every day: worsening of depression/anhedonia).

The PtGA of disease activity was measured on a VAS ranged from 0 mm to 100 mm, where 0 = no disease activity and 100=high disease activity. Participants assessed their fatigue during the last 7 days using a 0 mm - 100 mm VAS, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Participants assessed pain using a 0 mm - 100 mm VAS where 0 mm = minimum possible pain (best) and 100 mm = maximum possible pain (worst). The PHQ-2 is a brief depression screening instrument and enquire two factors: frequency of depressed mood and anhedonia over the past 2 weeks, scoring each question on scale of 0 ("not at all") to 3 ("nearly every day"). Total PHQ-2 ranged from 0-6. PGA disease activity was measured on a 0 mm to 100 mm VAS, with 0 mm = no disease activity and 100mm = maximum possible disease activity. Correlation coefficient between each of these parameters was measured using spearman correlation coefficient and reported.

The PtGA of disease activity was measured on a VAS ranged from 0 mm to 100 mm, where 0 = no disease activity and 100=high disease activity. Participants assessed their fatigue during the last 7 days using a 0 mm - 100 mm VAS, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Participants assessed pain using a 0 mm - 100 mm VAS where 0 mm = minimum possible pain (best) and 100 mm = maximum possible pain (worst). The PHQ-2 is a brief depression screening instrument and enquire two factors: frequency of depressed mood and anhedonia over the past 2 weeks, scoring each question on scale of 0 ("not at all") to 3 ("nearly every day"). Total PHQ-2 ranged from 0-6. PGA disease activity was measured on a 0 mm to 100 mm VAS, with 0 mm = no disease activity and 100mm = maximum possible disease activity. Correlation coefficient between each of these parameters was measured using spearman correlation coefficient and reported.

The PtGA of disease activity was measured on a VAS ranged from 0 mm to 100 mm, where 0 = no disease activity and 100=high disease activity. Participants assessed their fatigue during the last 7 days using a 0 mm - 100 mm VAS, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Participants assessed pain using a 0 mm - 100 mm VAS where 0 mm = minimum possible pain (best) and 100 mm = maximum possible pain (worst). The PHQ-2 is a brief depression screening instrument and enquire two factors: frequency of depressed mood and anhedonia over the past 2 weeks, scoring each question on scale of 0 ("not at all") to 3 ("nearly every day"). Total PHQ-2 ranged from 0-6. PGA disease activity was measured on a 0 mm to 100 mm VAS, with 0 mm = no disease activity and 100mm = maximum possible disease activity. Correlation coefficient between each of these parameters was measured using spearman correlation coefficient and reported.

The PtGA of disease activity was measured on a VAS ranged from 0 mm to 100 mm, where 0 = no disease activity and 100=high disease activity. Participants assessed their fatigue during the last 7 days using a 0 mm - 100 mm VAS, where 0 mm = no fatigue and 100 mm = worst possible fatigue. Participants assessed pain using a 0 mm - 100 mm VAS where 0 mm = minimum possible pain (best) and 100 mm = maximum possible pain (worst). The PHQ-2 is a brief depression screening instrument and enquire two factors: frequency of depressed mood and anhedonia over the past 2 weeks, scoring each question on scale of 0 ("not at all") to 3 ("nearly every day"). Total PHQ-2 ranged from 0-6. PGA disease activity was measured on a 0 mm to 100 mm VAS, with 0 mm = no disease activity and 100mm = maximum possible disease activity. Correlation coefficient between each of these parameters was measured using spearman correlation coefficient and reported.

FFbH consists 18 questions to assess daily activities in last 7 days. Each question is answered by the participant as "Yes, I can perform the activity without difficulty" (score assigned = 2), "Yes, but with some difficulties" (score assigned = 1) and "No or only with help" (score assigned = 0). Final FFbH score (FFbH functional capacity) was then computed according to formula: (Sum of all single scores * 100% [percent]) / (2 * number of answered questions) ranged between 0-100; higher score indicates better daily activities. Duration of morning stiffness was defined as the time elapsed when participant woke up in the morning and was able to resume normal activities without stiffness in minutes (If none was present = 0; If morning stiffness was continuing at the time of assessment or was unusual compared to the recent past, average of duration of stiffness over the past 3 days was reported; If stiffness persisted the entire day, 1440 minutes [24 hours*60 minutes] was recorded).

FFbH consists 18 questions to assess daily activities in last 7 days. Each question is answered by the participant as "Yes, I can perform the activity without difficulty" (score assigned = 2), "Yes, but with some difficulties" (score assigned = 1) and "No or only with help" (score assigned = 0). Final FFbH score (FFbH functional capacity) was then computed according to formula: (Sum of all single scores * 100% [percent]) / (2 * number of answered questions) ranged between 0-100; higher score indicates better daily activities. Duration of morning stiffness was defined as the time elapsed when participant woke up in the morning and was able to resume normal activities without stiffness in minutes (If none was present = 0; If morning stiffness was continuing at the time of assessment or was unusual compared to the recent past, average of duration of stiffness over the past 3 days was reported; If stiffness persisted the entire day, 1440 minutes [24 hours*60 minutes] was recorded).

FFbH consists 18 questions to assess daily activities in last 7 days. Each question is answered by the participant as "Yes, I can perform the activity without difficulty" (score assigned = 2), "Yes, but with some difficulties" (score assigned = 1) and "No or only with help" (score assigned = 0). Final FFbH score (FFbH functional capacity) was then computed according to formula: (Sum of all single scores * 100% [percent]) / (2 * number of answered questions) ranged between 0-100; higher score indicates better daily activities. Duration of morning stiffness was defined as the time elapsed when participant woke up in the morning and was able to resume normal activities without stiffness in minutes (If none was present = 0; If morning stiffness was continuing at the time of assessment or was unusual compared to the recent past, average of duration of stiffness over the past 3 days was reported; If stiffness persisted the entire day, 1440 minutes [24 hours*60 minutes] was recorded).

Percentage of participants who discontinued etanercept before completing the study, was reported.

Participants who switched from etanercept to either disease-modifying antirheumatic drugs (DMARDs) or alternative biologic drug were reported.

FFbH consisted 18 questions to assess daily activities in last 7 days. Each question was answered by the participant as "Yes, I can perform the activity without difficulty" (score assigned = 2), "Yes, but with some difficulties" (score assigned = 1) and "No or only with help" (score assigned = 0). Final FFbH score (FFbH functional capacity) was then computed according to formula: (Sum of all single scores * 100% [percent]) / (2 * number of answered questions) ranged between 0-100; higher score indicated better daily activities.

The CDAI is the numerical sum of 4 outcome parameters: TJC and SJC based on a 28-joint assessment, PtGA and PGA assessed on 0-10 cm VAS; higher scores=greater affection due to disease activity. CDAI total score = 0-76. CDAI <= 2.8 indicates disease remission, >2.8 to 10 = low disease activity, >10 to 22 = moderate disease activity, and >22 = high disease activity.

The SDAI is the numerical sum of five outcome parameters: TJC and SJC based on a 28-joint assessment, PtGA and PGA assessed on 0-10 cm VAS; higher scores=greater affection due to disease activity, and C-reactive protein (CRP) (mg/dL). SDAI total score= 0-86. SDAI <=3.3 indicates disease remission, >3.4 to 11 = low disease activity, >11 to 26 = moderate disease activity, and >26 = high disease activity.

BASDAI is a validated self-assessment tool used to determine disease activity in participant with ankylosing spondylitis. Utilizing a VAS of 0-10 (0=none and 10=very severe) participant's answered 6 questions measuring discomfort, pain and fatigue. The final BASDAI score averages the individual assessments for a final score range of 0(no symptoms)-10(very severe symptoms).

An enthesis is the site where the joint capsules, ligaments or tendons attach to the bone. Enthesitis is the inflammation of the entheses. This inflammation can lead to severe pain and discomfort.

Occiput-to-wall distance was the distance between the occiput (posterior or back portion of the head) and the wall when the participant stood with heels and shoulder against the wall and the back straight.

Percentage of BSA affected by psoriasis was estimated using the palm method: one of the participant's palm to proximal interphalangeal and thumb = 1 percent (%) of total BSA. Regions of the body were assigned specific number of palms with percentage [Head and neck = 10% (10 palms), upper extremities = 20% (20 palms), Trunk (axillae and groin) = 30% (30 palms), lower extremities (buttocks) = 40% (40 palms)]. The total BSA affected was the summation of individual regions affected.

Each of the 10 fingers and 10 toes was evaluated for dactylitis. Score ranged from 0 to 20, where affected numbers of fingers and toes were evaluated.

Combined assessment of lesion severity and area affected into single score. Body was divided into 4 sections: head, arms, trunk, legs. For each section, percent area of skin involved was estimated: 0= 0% involvement to 6= 90-100% involvement. Severity was estimated by clinical signs: erythema, induration, desquamation; scale: 0= none to 4= maximum. Final PASI = sum of severity parameters for each section*area score*weight of section (head: 0.1, arms: 0.2, body: 0.3, legs: 0.4); total possible score range: 0= no disease to 72= maximal disease.

PASI: combined assessment of lesion severity \& area affected into single score; range=0(no disease)-72(maximal disease). Body divided into 4 sections=head, upper/lower limbs, trunk; each area scored by itself \& scores combined for final PASI. For each section % area of skin involved was estimated:0(0%) - 6(90-100%) \& severity estimated by clinical signs of erythema, induration, desquamation; ranged 0-4: 0=none, 1=slight, 2=moderate, 3=marked, 4=very marked. Final PASI=sum of severity parameters for each section*area score*weighing factor(head=0.1, upper limbs=0.2, trunk=0.3, lower limbs=0.4). PASI75: at least a 75 % reduction in PASI relative to Baseline.

PASI: combined assessment of lesion severity \& area affected into single score; range=0(no disease)-72(maximal disease). Body divided into 4 sections=head, upper/lower limbs, trunk; each area scored by itself \& scores combined for final PASI. For each section % area of skin involved was estimated:0(0%) - 6(90-100%) \& severity estimated by component score of erythema, induration, desquamation; ranged 0-4: 0=none, 1=slight, 2=moderate, 3=marked, 4=very marked. Final PASI=sum of severity parameters for each section*area score*weighing factor(head=0.1, upper limbs=0.2, trunk=0.3, lower limbs=0.4).

PASI: combined assessment of lesion severity \& area affected into single score; range=0(no disease)-72(maximal disease). Body divided into 4 sections=head, upper/lower limbs, trunk; each area scored by itself \& scores combined for final PASI. For each section % area of skin involved was estimated:0(0%) - 6(90-100%) \& severity estimated by clinical signs of erythema, induration, desquamation; ranged 0-4: 0=none, 1=slight, 2=moderate, 3=marked, 4=very marked. Final PASI=sum of severity parameters for each section*area score*weighing factor(head=0.1, upper limbs=0.2, trunk=0.3, lower limbs=0.4).

The DLQI was a 10-item questionnaire that measures the impact of skin disease on participant's quality of life. Each question was evaluated on a 4-point scale ranging from 0 (not at all) to 3 (very much); where higher scores indicate more impact on quality of life. The DLQI total score ranges from 0 (not at all) to 30 (very much): no effect at DLQI < 2; small effect at 2 <=DLQI <= 5; moderate effect at 6 <=DLQI <= 10; very large effect at 11<=DLQI <= 20; extremely large effect at 21 <= DLQI <= 30.

Participant's assessment of pruritus measured on a 100 mm VAS ranging from 0 as "no Pruritus" to 100 as "most severe pruritus".