Study: NCT04320459

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Metrology Index (BASMI)
Description: It characterises the spinal mobility of patients with ankylosing spondylitis. Cervical rotation, tragus-wall distance, lateral lumbar flexion, anterior lumbar flexion (modified schober), intermalleolar distance were measured. The total score of the 5 measurements was taken, the score range was 0-10, the low score meant that the spinal movement was better.

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Metrology Index (BASMI)
Description: It characterises the spinal mobility of patients with ankylosing spondylitis. Cervical rotation, tragus-wall distance, lateral lumbar flexion, anterior lumbar flexion (modified schober), intermalleolar distance were measured. The total score of the 5 measurements was taken, the score range was 0-10, the low score meant that the spinal movement was better.

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Disease Activity Index (BASDAI)
Description: It assess the disease activity. It was evaluated with a 6-question questionnaire. After taking the answer of each question out of 10, the total of the points was calculated by dividing the number of questions.

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Disease Activity Index (BASDAI)
Description: It assess the disease activity. It was evaluated with a 6-question questionnaire. After taking the answer of each question out of 10, the total of the points was calculated by dividing the number of questions.

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Functional Index (BASFI)
Description: It assess functional status. It was evaluated with a 10-question questionnaire. After taking the answer of each question out of 10, the total of the points was calculated by dividing the number of questions.

Intervention type: DIAGNOSTIC_TEST
Intervention: Bath Ankylosing Spondylitis Functional Index (BASFI)
Description: It assess functional status. It was evaluated with a 10-question questionnaire. After taking the answer of each question out of 10, the total of the points was calculated by dividing the number of questions.

Intervention type: DIAGNOSTIC_TEST
Intervention: Ankylosing Spondylitis Quality of Life Questionnaire (ASQoL)
Description: It evaluates quality of life. Each statement on the ASQoL (18-item) is given a score of 1 or 0. A score of 1 is given where the item is affirmed, indicating adverse QoL. All item scores are summed to give a total score or index. Scores can range from 0 (good QoL) to 18 (poor QoL).

Intervention type: DIAGNOSTIC_TEST
Intervention: Ankylosing Spondylitis Quality of Life Questionnaire (ASQoL)
Description: It evaluates quality of life. Each statement on the ASQoL (18-item) is given a score of 1 or 0. A score of 1 is given where the item is affirmed, indicating adverse QoL. All item scores are summed to give a total score or index. Scores can range from 0 (good QoL) to 18 (poor QoL).

Intervention type: DIAGNOSTIC_TEST
Intervention: Toronto Alexithymia Scale-20 (TAS-20)
Description: It assess alexithymia. It is a 20 item questionnaire and each item is evaluated in a Likert type scale with five intervals (1= strongly disagree, 5=strongly agree). The total alexithymia score is the sum of responses to all 20 items, while the score for each subscale factor is the sum of the responses to that subscale. The TAS-20 uses cutoff scoring: equal to or less than 51 = non-alexithymia, equal to or greater than 61 = alexithymia. Scores of 52 to 60 = possible alexithymia.