| Name of the Instrument/Tool | Simplified AS Disease Activity Score (SASDAS) |
| First Description |
Sommerfleck FA, Schneeberger EE, Buschiazzo EE, Maldonado Cocco JA, Citera G: A simplified version of Ankylosing Spondylitis Disease Activity Score (ASDAS) in patients with ankylosing spondylitis. Clin Rheumatol 2012, 31: 1599–1603. 10.1007/s10067-012-2056-7 |
| Year | 2012 |
| Domains | |
| Concept of constructs | Disease activity |
| Population/Disease | Disease specific |
| Originally developed for | Ankylosing spondylitis (AS), Axial Spondyloarthritis |
| Other rheumatic diseases where can be applied (only if validated) |
--- |
| Additional population with no rheumatic diseases |
No |
| Language: Originally published in | English |
| Available in Language | --- |
| REFERENCE IDENTIFICATION | |
| Author/s | Sommerfleck FA, Schneeberger EE, Buschiazzo EE, Maldonado Cocco JA, Citera G |
| Title | A simplified version of Ankylosing Spondylitis Disease Activity Score (ASDAS) in patients with ankylosing spondylitis. |
| Journal | Clin Rheumatol |
| Year | 2012 |
| Vol | 31 |
| Num | --- |
| Pages | 1599–1603 |
| Country | Argentina |
| Language | English |
| Other references of interest | |
| Link | https://www.jrheum.org/content/49/10/1100 |
| Brief Description |
Schneeberger EE, Citera G, de Leon DP, Szumski AE, Kwok K, Cutri M, Dougados M. Simplified Ankylosing Spondylitis Disease Activity Score (SASDAS) Versus ASDAS: A Post Hoc Analysis of a Randomized Controlled Trial. J Rheumatol. 2022 Oct;49(10):1100-1108. doi: 10.3899/jrheum.211075. Epub 2022 Jul 15. PMID: 35840157. |
| Link | https://pubmed.ncbi.nlm.nih.gov/25146299/ |
| Brief Description |
Salaffi, F., Ciapetti, A., Carotti, M. et al. Construct validity and responsiveness of the simplified version of Ankylosing Spondylitis Disease Activity Score (SASDAS) for the evaluation of disease activity in axial spondyloarthritis. Health Qual Life Outcomes 12, 129 (2014). https://doi.org/10.1186/s12955-014-0129-9 |
| Link | https://pubmed.ncbi.nlm.nih.gov/27357718/ |
| Brief Description |
Schneeberger EE, Zamora N, Citera G. SASDAS (simplified version of ankylosing spondylitis disease activity score)-ESR performance and development of SASDAS-CRP and their agreement with ASDAS-ESR and ASDAS-CRP in patients with ankylosing spondylitis. Clin Rheumatol. 2016 Nov;35(11):2865-2866. doi: 10.1007/s10067-016-3342-6. Epub 2016 Jun 29. PMID: 27357718. |
| Instrument/Tool Translations References | |
| Link | https://pubmed.ncbi.nlm.nih.gov/26670454/ |
| Brief Description |
Solmaz D, Yildirim T, Avci O, Tomas N, Akar S. Performance characteristics of the simplified version of ankylosing spondylitis disease activity score (SASDAS). Clin Rheumatol. 2016 Jul;35(7):1753-8. doi: 10.1007/s10067-015-3147-z. Epub 2015 Dec 16. PMID: 26670454. |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Fernando A Sommerfleck |
| fersommerfleck@gmail.com | |
| Address | Section of Rheumatology, Instituto de Rehabilitación Psicofísica, Echeverría 955, 1428 Buenos Aires, Argentina |
| Website | --- |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Score |
| Brief Description |
SASDAS stands for Simplified Ankylosing Spondylitis Disease Activity Score, and it is a simplified version of the Ankylosing Spondylitis Disease Activity Score (ASDAS). The ASDAS is a composite index that takes into account several variables, including patient-reported outcomes, acute-phase reactants, and clinical evaluations. The SASDAS was developed as an alternative to the ASDAS that does not require a calculator. It is based on the same components as the ASDAS, but only uses two versions: one that includes the erythrocyte sedimentation rate (ESR) and one that includes C-reactive protein (CRP) levels. Both versions of the SASDAS are easy to calculate and provide a quick assessment of disease activity in axSpA patients. |
| Number of Items | 5 |
| Range | 0-50 |
| Responses options/scale |
No |
| Developed for | --- |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered, Physician |
| Recommendations to score |
SASDAS is calculated by the simple linear addition of the scores of the individual components of the ASDAS: patient global assessment (NRS 0–10 cm), back pain (BASDAI question no. 2), peripheral pain and swelling (BASDAI question no. 3), duration of morning stiffness (BASDAI question no. 6), and ESR in millimeters per hour or CRP mg/dL, divided by 10. |
| Score Interpretation | The higher the score, the higher the disease activity. |
| Cut-off points | Inactive disease from 0 to 7.8, moderate disease activity from 7.9 to 13.8, high disease activity from 13.9 to 27.6 and very high activity above 27.6 |
| Cut-off points applied to | Research, Routine care |
| Smallest detectable change if described | --- |
| Smallest detectable change applied to | --- |
| Completion time by the patient | - minutes |
| Scoring time by the assessor | - minutes |
| Training to score | Not necessary |
| Strengths | Easy to use, Useful in clinical practice & research |
| Limitations | --- |
| OTHER COMMENTS | |
| Other Comments | --- |