| Literature DB >> 32371432 |
Kristien Van der Elst1, Patrick Verschueren2,3, Diederik De Cock3, An De Groef4,5, Veerle Stouten3, Sofia Pazmino3, Johanna Vriezekolk6, Johan Joly1, Philip Moons7,8,9, René Westhovens1,3.
Abstract
OBJECTIVES: To identify and characterise a subgroup of patients with early rheumatoid arthritis (RA) reporting not feeling well 1 year after treatment initiation despite achieving optimal disease control according to current treatment standards.Entities:
Keywords: cluster analysis; fatigue; pain; patient-reported outcomes; rheumatoid arthritis; unmet needs
Mesh:
Substances:
Year: 2020 PMID: 32371432 PMCID: PMC7299515 DOI: 10.1136/rmdopen-2019-001146
Source DB: PubMed Journal: RMD Open ISSN: 2056-5933
Average scores of the five patient-reported outcomes after 1 year of RA treatment used to assign patients with an early and persistent treatment response to a cluster (n=140)
| Clusters | |||
|---|---|---|---|
| PRO scores at year 1 | Concordant to disease activity n=109 (77.9%) | Dominant fatigue n=13 (9.3%) | Dominant pain and fatigue n=18 (12.9%) |
| Pain (0–100) | |||
| mean±SD | 7.3±7.5 | 14.5±8.9 | 45.1±14.6 |
| median (Q1–Q3) | 5 (2–3) | 15 (10–20) | 51 (48–68) |
| Fatigue (0–100) | |||
| mean±SD | 10.0±9.9 | 69.6±14.3 | 42.4±14.0 |
| median (Q1–Q3) | 10 (2–20) | 70 (60–80) | 51 (45–60) |
| Physical functioning (0–3) | |||
| mean±SD | 0.1±0.1 | 0.2±0.3 | 0.3±0.3 |
| median (Q1–Q3) | 0 (0–0.1) | 0.1 (0–0.4) | 0.1 (0–0.5) |
| RA-related quality of life (0–30) | |||
| mean±SD | 3.9±4.9 | 6.2±2.4 | 5.6±5.0 |
| median (Q1–Q3) | 2.9 (1–5) | 7 (4–8) | 3 (2.2–8.1) |
| Sleep quality (0–21) | |||
| mean±SD | 5.0±3.0 | 6.0±1.9 | 5.4±2.6 |
| median (Q1–Q3) | 4 (3–6) | 6 (5–7) | 5 (4–6) |
Higher scores indicate worse pain, worse fatigue, more functional loss, worse health-related quality of life and worse sleep quality. Early and persistent response was defined as a DAS28CRP<2.6 at week 16, sustained between week 16 and week 52. PRO, patient-reported outcome; Q1, quartile 1 (25th percentile); Q3, quartile 3 (75th percentile); RA, rheumatoid arthritis.
Baseline patient characteristics and patient-reported outcomes organised for each cluster
| Baseline variables | Concordant to disease activity cluster (n=109) | Dominant fatigue cluster (n=13) | Dominant pain and fatigue cluster (n=18) |
|---|---|---|---|
| Women, n(%) | 76 (69.7) | 9 (69.2) | 10 (55.6) |
| Age (years) | |||
| mean±SD | 52.5±13.3 | 52.2±11.4 | 54.2±15.4 |
| median (Q1–Q3) | 54 (44–62) | 55 (51–60) | 47 (44–64) |
| DAS28CRP (0–9.4) | |||
| mean±SD | 4.5±1.2 | 4.3±1.0 | 4.5±0.9 |
| median (Q1–Q3) | 4.41 (3.7–5.4) | 4.10 (3.8–4.7) | 4.6 (3.7–5.0) |
| Pain (0–100) | |||
| mean±SD | 50.8±25.2 | 53.7±17.6 | 53.4±19.2 |
| median (Q1–Q3) | 50 (30–70) | 53 (46–60) | 60 (37–68) |
| Fatigue (0–100) | |||
| mean±SD | 40.4±24.6† | 53.6±23.8 | 49.9±16.1 |
| median (Q1–Q3) | 42 (20–57) | 52 (46–60) | 51 (41–75) |
| Physical functioning (0–3) | |||
| mean±SD | 0.9±0.7 | 0.7±0.4 | 0.8±0.6 |
| median (Q1–Q3) | 0.8 (0.4–1.3) | 0.6 (0.5–0.8) | 0.6 (0.4–0.9) |
| RA quality of life (0–30) | |||
| mean±SD | 9.1±6.8† | 8.0±4.5 | 10.6±7.7 |
| median (Q1–Q3) | 8 (4–13) | 9 (5–14) | 7 (5–10.3) |
| Sleep quality (0–21) | |||
| mean±SD | 7.9±4.3† | 8.3±3.5† | 8.2±3.6 |
| median (Q1–Q3) | 7 (5–11) | 7 (5–8) | 9 (5–11) |
| Symptom duration (weeks) | |||
| mean±SD | 30.3±30.4 | 29.4±37.7 | 34.7±27.1 |
| median (Q1–Q3) | 22 (13–36) | 38 (26–52) | 14 (13–19) |
| Comorbidities (present), n(%) | 72 (66.1) | 10 (76.9) | 16 (88.9) |
| IPQ-R treatment control* (5–25) | |||
| mean±SD | 19.1±2.2 | 17.9±2.1 | 18.5±2.2 |
| median (Q1-Q3) | 19 (18–21) | 18 (18–19) | 18 (18–19) |
*Patients’ belief in the effectiveness of treatment to control RA at treatment initiation.
†Missingness for patient-reported outcomes: 0.9% (pain; fatigue), 4.6% (RA quality of life), 7.7% (sleep quality, ‘dominant fatigue’ cluster), 10.1% (sleep quality, ‘concordant’ cluster).
comorbidities, number of patients having at least one comorbidity at trial screening; DAS28CRP, 28-joint disease activity score using C-reactive protein level; IPQ-R, Revised Illness Perception Questionnaire; Q1, quartile 1 (25th percentile); Q3, quartile 3 (75th percentile); RA, rheumatoid arthritis
Figure 1Effect sizes of patient-reported outcomes at baseline and week 16 when comparing the ‘dominant pain and fatigue’ cluster with the ‘concordant to disease activity’ cluster and the ‘dominant fatigue cluster’ cluster with the ‘concordant to disease activity’ cluster. The red line represents no effect: patients in the ‘discordant’ clusters gave the same score as patients in the ‘concordant to disease activity’ cluster. The area on the left of this line represents the negative ESs: patients in the ‘discordant’ clusters reported a lower score. The area on the right represents the positive ES: patients in the ‘discordant’ clusters reported a higher score. White area: no meaningful effect (Cohen’s d 0–0.2); blue area: small effects (Cohen’s d 0.2–0.5), orange area: medium effects (Cohen’s d 0.5–0.8), green area: large effects (Cohen’s d≥0.8). BL: Baseline; W16: week 16 of treatment.