A Study of Golimumab in Participants With Active Psoriatic Arthritis

The ACR 20 response is defined as greater than or equal to (>=) 20 percent (%) improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints) and >=20% improvement from baseline in at least 3 of the following 5 assessments: Patient's assessment of pain (on a 0 to 10 centimeter [cm] scale), Patient's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Physician's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Patient's assessment of physical function as measured by Disability Index of the Health Assessment Questionnaire (HAQ-DI) and measurement of a blood test called C-reactive protein (CRP).

The Health Assessment Questionnaire-Disability Index (HAQ-DI) is a 20-question instrument that assesses the degree of difficulty a person has in accomplishing tasks in 8 functional areas (dressing, arising, eating, walking, hygiene, reaching, gripping and activities of daily living). Responses in each functional area are scored from 0 to 3 (0=no difficulty and 3=inability to perform a task in that area). Overall score was computed as the sum of domain scores and divided by the number of domains answered. Total possible score range 0-3 where 0 = least difficulty and 3 = extreme difficulty.

The ACR 50 response is defined as: greater than or equal to (>=) 50 percent (%) improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints) and >=50% improvement from baseline in at least 3 of the following 5 assessments: Patient's assessment of pain (on a 0 to 10 cm scale), Patient's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Physician's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Patient's assessment of physical function as measured by Disability Index of the Health Assessment Questionnaire (HAQ-DI) and measurement of a blood test called C-reactive protein (CRP).

The PASI is a system used for assessing and grading the severity of psoriatic lesions. In the PASI system, the body is divided into 4 regions: the head, trunk, upper extremities, and lower extremities. Each of these areas were assessed separately for the percentage of the area involved, which translates to a numeric score that ranges from 0 to 6, and for erythema, induration, and scaling, which are each rated on a scale of 0 to 4. The PASI produces a numeric score that can range from 0 to 72. A higher score indicates more severe disease. A PASI 75 response represents participants who achieved at least a 75 percent improvement from baseline in the PASI score.

The modified vdH-S score is a radiographic evaluation of hand and feet erosions and joint space narrowing (JSN) for 20 joints per hand and 6 joints per foot with a total score ranging from 0 (best) to 528 (worst = worst possible erosion score of 320 + worst possible JSN score of 208). Higher score and positive score changes indicate more radiographic damage and radiographic progression, respectively.

Enthesitis will be assessed using the Leeds Enthesitis Index (LEI). The LEI was developed to assess enthesitis in participants with PsA, and evaluates the presence (score of 1) or absence of pain (score of 0) by applying local pressure to Lateral elbow epicondyle, left and right, Medial femoral condyle, left and right, and Achilles tendon insertion, left and right. LEI scores ranging from 0 (0 sites with tenderness) to 6 (worst possible score; 6 sites with tenderness).

Dactylitis is characterized by swelling of the entire finger or toe. The severity of dactylitis is scored on a scale of 0-3, where 0=tenderness and 3=extreme tenderness in each digit of the hands and feet. The range of total dactylitis scores for a participant is 0-60. Higher score indicates greater degree of tenderness.

The SF-36 is a survey of participant health. It consists of 8 individual domains, which are weighted sums of the questions in their section. The 8 domains are: vitality (VT), physical functioning (PF), bodily pain (BP), general health (GH), Role-Physical (RP), Role-Emotional (RE), social functioning (SF) and mental health (MH). Each of these 8 scales (domains) is scored from 0 to 100 with higher scores indicating better health. Based on the scale scores, the summary physical component score (PCS) is derived. Scales contributing most to the scoring of the SF-36 PCS include the PF, RP, BP and GH. Other domains not noted contribute to the scoring but to a lesser degree. The scoring is derived based on an algorithm that has been developed in a software provided by the developer. The summary PCS score is also scaled from 0 to 100 with higher scores indicating better health.

The ACR 50 response is defined as greater than or equal to (>=) 50 percent (%) improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints) and >=50% improvement from baseline in at least 3 of the following 5 assessments: Patient's assessment of pain (on a 0 to 10 centimeter [cm] scale), Patient's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Physician's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Patient's assessment of physical function as measured by Disability Index of the Health Assessment Questionnaire (HAQ-DI) and measurement of a blood test called C-reactive protein (CRP).

The ACR 70 response is defined as greater than or equal to (>=) 70 percent (%) improvement from baseline in both swollen joint count (66 joints) and tender joint count (68 joints) and >=70% improvement from baseline in at least 3 of the following 5 assessments: Patient's assessment of pain (on a 0 to 10 centimeter [cm] scale), Patient's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Physician's Global Assessment of Disease Activity (on a 0 to 10 cm scale), Patient's assessment of physical function as measured by Disability Index of the Health Assessment Questionnaire (HAQ-DI) and measurement of a blood test called C-reactive protein (CRP).

The SF-36 is a survey of participant health. It consists of 8 individual domains, which are weighted sums of the questions in their section. The 8 domains are: vitality (VT), physical functioning (PF), bodily pain (BP), general health (GH), Role-Physical (RP), Role-Emotional (RE), social functioning (SF) and mental health (MH). Each of these 8 scales (domains) is scored from 0 to 100 with higher scores indicating better health. Based on the scale scores, the summary mental component score (MCS) is derived. Scales contributing most to the scoring of the SF-36 MCS include the VT, SF, RE and MH. Other domains not noted contribute to the scoring but to a lesser degree. The scoring is derived based on an algorithm that has been developed in a software provided by the developer. The summary MCS score is also scaled from 0 to 100 with higher scores indicating better health.