The main purpose of this study is to establish that etoricoxib 30 mg is safe and not inferior to celecoxib 200 mg in the treatment of the signs and symptoms of osteoarthritis in Korean patients. Given that the efficacy of etoricoxib vs. placebo in the treatment of osteoarthritis has been established, and that prescription drugs, such as celecoxib, are available for the treatment of pain associated with osteoarthritis in Korea, it would be inappropriate to subject patients with a flare of osteoarthritic pain to the placebo treatment for 12 weeks, and thus the study is designed as an active-comparator study.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
239
Etoricoxib 30 mg tablet once daily for 12 weeks.
Celecoxib 200 mg once daily for 12 weeks
Time-Weighted Mean Change From Baseline in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) Pain Subscale
The WOMAC osteoarthritis scale consists of 24 items in 3 subscales: pain, stiffness, and physical function. The pain subscale rates participant pain during walking, using stairs, in bed, sitting or lying, and standing using a visual analog scale (VAS) from 0-100mm where 0 is the best possible level of pain and 100 is the highest level of pain. The pain subscale is calculated as the average of the responses to the 5 questions related to pain. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Baseline, Week 2, Week 6, Week 12
Time-Weighted Mean Change From Baseline in the WOMAC Physical Function Subscale
The WOMAC osteoarthritis scale consists of 24 items in 3 subscales: pain, stiffness, and physical function. The physical function subscale rates participant pain during stair use, rising from sitting, standing, bending, walking, getting in/out of a car, shopping, putting on/taking off socks, rising from bed, lying in bed, getting in/out of the bath, sitting, getting on/off the toilet, heavy household duties, and light household duties using a visual analog scale (VAS) from 0-100mm where 0 is the best possible level of functioning and 100 is the highest level of functioning. The physical function subscale was calculated as the average of the responses to the 17 questions related to functional status. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Baseline, Week 2, Week 6, Week 12
Time-Weighted Mean Change From Baseline in the Participant Global Assessment of Disease Status
The Participant Global Assessmet of Disease was a one item questionnaire that asked participants to answer the following question, "Considering all the ways your arthritis affects you, mark (X) on the scale for how well you are doing." The questionnaire employed a 0-100 mm visual analog scale (VAS) to record participant responses, with 0 representing the best possible assessment and 100 representing the worst possible assessment. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Baseline, Week 2, Week 6, Week 12
Time-Weighted Mean Response in the Participant Global Assessment of Response to Therapy
Participants were asked to rate their global assessment of response to therapy on a Likert scale from 0 to 4, with 0 = excellent, 1 = good, 2 = fair, 3 = poor, 4 = none. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Week 2, Week 6, Week 12
Time-Weighted Mean Change From Baseline in the Investigator Global Assessment of Disease Status
Study investigators were asked to rate the global assessment of participant disease status on a Likert scale from 0 to 4, with 0 = very well, 1 = good, 2 = fair, 3 = poor and 4 = very poor. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Baseline, Week 2, Week 6, Week 12
Time-Weighted Mean Change From Baseline in the WOMAC Stiffness Subscale
The WOMAC osteoarthritis scale consists of 24 items in 3 subscales: pain, stiffness, and physical function. The stiffness subscale rates stiffness after first waking and later in the day using a visual analog scale (VAS) from 0-100mm where 0 is the best possible level of stiffness and 100 is the highest level of stiffness. The stiffness subscale is calculated as the average of the responses to the 2 questions related to stiffness. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Baseline, Week 2, Week 6, Week 12
Time-Weighted Mean Response on the Investigator Global Assessment of Response to Therapy
Study investigators were asked to rate the global assessment of participant response to therapy on a Likert scale from 0 to 4, with 0 = excellent, 1 = good, 2 = fair, 3 = poor, 4 = none. The calculation of the time-weighted average was done by taking the time between adjacent observations divided by the time from the randomization visit to the last observation in the period of interest, and using it as the weight for computation of the average.
Time frame: Week 6, Week 12
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