The purpose of this non-interventional, multicenter, post-marketing observational study (PMOS) was to assess rheumatoid arthritis (RA), psoriatic arthritis (PsA), ankylosing spondylitis (AS), plaque psoriasis (PS), Crohn's disease (CD) and ulcerative colitis (UC) patients' adherence attitudes (beliefs) to maintenance therapy with adalimumab monotherapy or combination therapy with methotrexate (in participants with RA) and to investigate whether there were correlations between such beliefs and adherence to maintenance treatment.
Adalimumab was prescribed in the usual manner in accordance with the terms of the local marketing authorization with regards to dose, population and indication. The assignment of a participant to an adalimumab-containing regimen was decided in advance and was to be current practice. The prescribing of adalimumab was clearly separated from the decision to include the participant in the study. Participants were observed for a maximum of 12 months, with a total of 5 study visits (Screening = Visit 1).
Study Type
OBSERVATIONAL
Enrollment
96
Adalimumab administered by subcutaneous injection, via pre-filled syringe or autoinjector pen
Change From Baseline in the Beliefs About Medicines Questionnaire (BMQ) Specific Score at 12 Months
The BMQ-Specific Scale comprises two 5-item factors assessing beliefs about the necessity of prescribed medication (Specific-Necessity) and concerns about prescribed medication based on beliefs about the danger of dependence, long-term toxicity, and the disruptive effects of medication (Specific-Concerns). Individual items are scored on a 5-point scale from 1 (strongly disagree) to 5 (strongly agree). The total score ranges from 10 (lowest score) to 50 (highest score). Higher scores indicate stronger beliefs.
Time frame: Baseline and 12 months
Correlation Between Beliefs About Medicines Questionnaire (BMQ) Specific Score and Adherence to Treatment as Measured by the Morisky Medication Adherence Scale (MMAS) at 12 Months
The BMQ-Specific Scale comprises two 5-item factors assessing beliefs about the necessity of prescribed medication (Specific-Necessity) and concerns about prescribed medication based on beliefs about the danger of dependence, long-term toxicity, and the disruptive effects of medication (Specific-Concerns). Individual items are scored on a 5-point scale from 1 (strongly disagree) to 5 (strongly agree). The total score ranges from 10 (lowest score) to 50 (highest score). Higher scores indicate stronger beliefs. The MMAS is a 4-item self-reported measure of medication-taking behavior. It measures intentional and non-intentional non-adherence (based on forgetting, carelessness, stopping medication when feeling better, or stopping medication when feeling worse). The MMAS consists of 4 questions which can be answered with yes (0) and no (1). The MMAS score is the sum of all four questions and ranges from 0 (non-adherent) to 4 (adherent).
Time frame: Baseline and 12 months
Change in Morisky Medication Adherence Scale (MMAS) Scores From Month 3 to Month 12
The MMAS is a 4-item self-reported measure of medication-taking behavior. It measures intentional and non-intentional non-adherence (based on forgetting, carelessness, stopping medication when feeling better, or stopping medication when feeling worse). The MMAS consists of 4 questions which can be answered with yes (0) and no (1). The MMAS score is the sum of all four questions and ranges from 0 (non-adherent) to 4 (adherent).
Time frame: At Month 3 and Month 12
Change in the Treatment Satisfaction Questionnaire for Medication (TSQM) Scores From Month 3 to Month 12
The 11-item Treatment Satisfaction Questionnaire for Medication (TSQM) Version II is an instrument to assess participants' satisfaction with medication, providing scores on four scales (side effects, effectiveness, convenience, and global satisfaction). The 11 questions can be answered either with yes/no or by means of a five or seven stage scale (ranging from very unsatisfied to satisfied). TSQM Scale scores range from 0 to 100 and higher scores represent higher satisfaction.
Time frame: At Month 3 and Month 12
Change in Rheumatoid Arthritis Disease Activity Index (RADAI) Scores Over Time
The RADAI is a questionnaire for participants used for measuring disease activity. The index consists of 6 questions. The items ask the participants about (1) global disease activity in the last 6 months, (2) disease activity in terms of current swollen and tender joints, (3) arthritis pain, (4) the current status of health, (5) duration of morning stiffness, and (6) tender joints rated on a joint list. The joint list asks about pain in the left and right shoulders, elbows, wrists, fingers, hips, knees, ankles and toes. The first 4 items are rated on a numeric rating scale from 0 to 10, where higher scores indicate more disease activity. The scores on the last 2 items range from 0 to 6 and 0 to 48, respectively, but are transformed on the same scale of 0 to 10. The RADAI total score is the sum of individual items divided by 5 (range 0-10), with a higher score signifying more disease activity.
Time frame: Baseline, Month 3, Month 6, Month 9, Month 12
Change in Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) Score Over Time
The Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) assesses disease activity by asking the participant to answer 6 questions (each on a 10 point numeric rating scale \[NRS\]) pertaining to symptoms experienced for the past week. For 5 questions (level of fatigue/tiredness, level of AS neck, back or hip pain, level of pain/swelling in joints, other than neck, back or hips, level of discomfort from any areas tender to touch or pressure, and level of morning stiffness), the response is from 0 (none) to 10 (very severe); for Question 6 (duration of morning stiffness), the response is from 0 (0 hours) to 10 (≥ 2 hours). The overall BASDAI score ranges from 0 to 10. Lower scores indicate less disease activity.
Time frame: Baseline, Month 3, Month 6, Month 9, Month 12
Change in C-reactive Protein (CRP) Concentration Over Time
C-reactive protein (CRP) was measured from blood samples as a marker for inflammation. Higher levels are indicative of more inflammation. Normal concentration in healthy individuals is usually lower than 1 mg/dL, slightly increasing with age, and increased in a variety of disorders such as rheumatic diseases.
Time frame: Baseline, Month 3, Month 6, Month 9, Month 12
Changes in Erythrocyte Sedimentation Rate (ESR) Over Time
Erythrocyte sedimentation rate (ESR) indirectly measures how much inflammation is in the body, and is based on the sedimentation and aggregation of erythrocytes (red blood cells). A higher ESR is indicative of increased inflammation. The normal range in healthy individuals is 0 - 10 mm/h for men and 0-15 mm/h for women.
Time frame: Baseline, Month 3, Month 6, Month 9, Month 12
Change in Psoriasis Area and Severity Index (PASI) Score Over Time
The Psoriasis Area and Severity Index (PASI) is a combination of the intensity of psoriasis, assessed by the erythema (reddening), induration (plaque thickness) and desquamation (scaling) on a scale from no symptoms (0), slight (1), moderate (2), marked (3) or very marked (4), together with the percentage of the area affected, rated on a scale from 0 to 6. PASI scoring is performed at four body areas, the head, arms, trunk, and legs. The total PASI score ranges from 0 to 72. The higher the total score, the more severe the disease.
Time frame: Baseline, Month 3, Month 6, Month 9, Month 12
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