RHEUPP - A Rheumatological Follow-up Management App

Non-inferiority margin of -0.6 u.m defined based on a 50% of Good EULAR Response criteria

Simplified Disease Activity Index for Rheumatoid Arthritis (SDAI) is calculated as follows: [SDAI = SJC + TJC +PGA + EGA + CRP]. Remission is defined as an SDAI of <3.3, low disease activity as ≤11, moderate disease activity as ≤26 and high disease activity as >26.

The ACR20 is a composite measure defined as an improvement of 20% in the number of tender and swollen joints and a 20% improvement in three of the following five criteria: patient global assessment, physician global assessment, functional ability measure [most often Health Assessment Questionnaire (HAQ)], visual analog pain scale, and erythrocyte sedimentation rate or C-reactive protein (CRP).

The ACR50 is a composite measure defined as an improvement of 50% in the number of tender and swollen joints and a 50% improvement in three of the following five criteria: patient global assessment, physician global assessment, functional ability measure [most often Health Assessment Questionnaire (HAQ)], visual analog pain scale, and erythrocyte sedimentation rate or C-reactive protein (CRP).

The ACR70 is a composite measure defined as an improvement of 70% in the number of tender and swollen joints and a 70% improvement in three of the following five criteria: patient global assessment, physician global assessment, functional ability measure [most often Health Assessment Questionnaire (HAQ)], visual analog pain scale, and erythrocyte sedimentation rate or C-reactive protein (CRP).

The Disease Activity Score-28 for Rheumatoid Arthritis (DAS28) range from 0 to 9.4 and are calculated using tender joints, swollen joints, general health, and a laboratory measure of acute inflammation.

The Clinical Disease Activity Index (CDAI) is based on the simple summation of the count of swollen/tender joint count of 28 joints along with patient and physician global assessment on VAS (0-10 cm) Scale for estimating disease activity. The CDAI has range from 0 to 76

The Simplified Disease Activity Index for Rheumatoid Arthritis (SDAI) is the numerical sum of five outcome parameters: tender and swollen joint count (based on a 28-joint assessment), patient and physician global assessment of disease activity [visual analogue scale (VAS) 0-10 cm] and level of C-reactive protein (mg/dl, normal <1 mg/dl). The SDAI has a range from 0 to 100.

Based on the definition of remission criteria by ACR/EULAR for each score

Based on the definition of remission criteria by ACR/EULAR for each score

Estimation based on absolute number of participants

PGA is often assessed by a single question with a 0-10 or 0-100 response. The content can vary and relates either to global health (e.g., how is health overall) or to disease activity (e.g., how active is arthritis).

RAPID3 is a composite index of physical function, pain and PGA-VAS each scored 0-10, comprising a 0-30 score. Higher scores indicate poorer status. Four RAPID3 severity categories have been proposed: high (>12), moderate (6.1-12), low (3.1-6) and near remission (≤3).

Multi-dimensional health assessment questionnaire (MDHAQ) - PMID 16273781 [Authorized License from RWS Life Sciences]

System Usability Scale (SUS): Lewis JR, Sauro J. The factor structure of the system usability scale. In: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 94-103; 2009.

Based on the Brazilian version DOI: https://doi.org/10.33448/rsd-v12i6.42056

Measure by the Brazilian version of ASES-8 https://doi.org/10.1590/1516-3180.2018.0354071218

Health Assessment Questionnaire (HAQ) is a tool for measuring functional status in rheumatology. Scores of 0 to 1 are generally considered to represent mild to moderate difficulty, 1 to 2 moderate to severe disability, and 2 to 3 severe to very severe disability.

Based on the definition criteria by ACR/EULAR

Based on the definition of Boolean remission criteria by ACR/EULAR

Flare will be considered when the RAPID3 score increases by more than 2 points in relation to the previous score or if the current RAPID3 is greater than 4.

Flare on RAPID3 score will be considered if increases by more than 2 points in relation to the previous score or if the current RAPID3 is greater than 4.

PMID: 15868614

Based on the Brazilian version PMID: 23604595 / https://doi.org/10.1186/s42358-020-00139-3

To evaluate cost-effectiveness and added value of the instrument in routine assistance, the number of consultations or attendance needs in emergency care/emergency care for participants throughout their follow-up at the study; travel cost estimate; evaluation of the score result in the decision professional's therapy and user's perception of the use of the instrument in monitoring your rheumatological disease.