Intense symptoms of pain are associated with poor sleep, fibromyalgia, depression and sleep apnea in patients with rheumatoid arthritis and psoriatic arthritis. A register based study.

OBJECTIVES: To study whether poor sleep and comorbidities are associated with high symptom levels of patient reported outcomes (PROs) pain, patient global assessment and fatigue in patients with rheumatoid arthritis (RA) and psoriatic arthritis (PsA), in a nation-wide cross-sectional setting. METHODS: Clinical data were extracted from The Finnish Rheumatology Quality Register between 1.2021 and 9.2022. Self-reported sleep was categorized as "good‿ (little/no difficulties) or "poor‿ (great difficulties/can't) sleep. Data concerning comorbidities were collected from national registers. Descriptive statistics were used. Regression analyses were applied to analyze independent associations of sleep status, comorbidities and disease activity with pain in RA and PsA, adjusting for age and sex. RESULTS: Among 13512 patients with RA, 6052 (mean (SD) age 62(13), 71% female) had sleep status reported; in PsA 1861/3636 (age 55(13), 48% female). In RA, 5072(84%) reported good and 980(16%) poor sleep; the corresponding numbers in PsA were 1460(78 %) and 401(22%). Median values for objective disease activity were low and similar in patients with poor sleep and good sleep in both diseases. Among patients with no swollen joints, the median values for PROs were approximately 3 times higher for patients with poor sleep vs good sleep in both diagnoses (p<0.001 ). In regression analyses, ''poor'' sleep was independently associated with higher symptoms in pain (B(95%CI) 20 (18,22) in RA and 23 (19, 26) in PsA), followed by comorbid fibromyalgia, as well as depression in RA and sleep apnea in PsA. CONCLUSION: ''Poor'' sleep quality and comorbidities are independently associated with pain. Patient's sleep status is important to know especially in patients with severe symptoms without objective disease activity.

Similar levels of disease activity and remission rates in patients with psoriatic arthritis and rheumatoid arthritis-results from the Finnish quality register.

OBJECTIVES: To compare the current disease activity and remission rates, and their regional variation in patients with psoriatic arthritis (PsA) and rheumatoid arthritis (RA) in Finland. METHODS: Data of patients' most recent visit in 1/2020-9/2021 were extracted from the Finnish Rheumatology Quality Register. Measures for disease activity and remission included joint counts, DAS28, cDAPSA, CDAI, the Boolean definition, and physician assessment. Regression analyses were applied, adjusted for age and sex. RESULTS: Data of 3598 patients with PsA (51% female, mean age 54 years) and 13,913 patients with RA (72% female, 74% ACPA-positive, mean age 62 years) were included. The median (IQR) DAS28 was 1.9 (1.4, 2.6) in PsA and 2.0 (1.6, 2.7) in RA (p = 0.94); for cDAPSA, the median (IQR) values were 7.7 (3.1, 14) in PsA and 7.7 (3.3, 14) in RA (p < 0.001). In all regions in both diseases, the median DAS28 was ≤ 2.6 and the median cDAPSA < 13. Remission rates included DAS28 < 2.6 in 73% in PsA and 69% in RA (p = 0.17) and Boolean remission in 17% in PsA and 15% in RA (p < 0.001). By other definitions of remission, the rates ranged between 30% and 46%. Methotrexate was currently used by 49% in PsA and 57% in RA (p < 0.001). Self-administered bDMARDs were currently used by 37% in PsA and 21% in RA (p < 0.001). CONCLUSION: The overall disease activity was low and similar in patients with PsA and RA across the country. Remission rates varied between 15 and 73%, depending on the definition but were similar in PsA and RA. Key Points • The disease activity and clinical picture was similar between patients with PsA and RA, in a cross-sectional setting in 1.2020-9.2021. • A significant majority of patients with PsA had low disease activity or were in remission according to cDAPSA. Majority of patients with RA were in remission according to DAS28. • Patients with PsA and RA used methotrexate similarly. The utilization of bDMARDs was more prevalent in patients with PsA.

Initial presentation of early rheumatoid arthritis.

OBJECTIVES: To study the joint distribution and clinical picture of rheumatoid arthritis (RA) at the initial presentation in seropositive (anti-citrullinated protein antibody (ACPA) and/or rheumatoid factor (RF) positive) and negative patients and the effect of duration of symptoms on the clinical picture. METHODS: Data of patients who received reimbursement for DMARDs for newly diagnosed RA in 1/2019 to 9/2021 were extracted from the national databases. Joint counts, presence of symmetrical swelling, other disease activity measures, and patient reported outcomes (PROs) were compared in seropositive and negative patients. Regression analyses were applied to compare clinical variables in patients with duration of symptoms of <3, 3-6, and >6 months, adjusted for age, sex, and seropositivity. RESULTS: Data of 1816 ACPA and RF-tested patients were included. Symmetrical swelling was present in 75% of patients. Seronegative versus positive patients had higher value for all disease activity measures and PROs including median swollen joint count (SJC46 10 versus 5) and DAS28 (4.7 versus 3.7), (p<0.001). Patients diagnosed in <3 months had higher median pain VAS (62 versus 52 and 50, p<0.001) and HAQ (1.1 versus 0.9 and 0.75, p = 0.002) compared to those with a duration of symptoms of 3-6 and >6 months. Patients diagnosed >6 months were ACPA-positive more frequently (77% versus 70% in other groups, p = 0.045). CONCLUSION: Incident RA presents mainly as symmetric arthritis. Seronegative patients have higher disease burden at the initial presentation. Patients experiencing more severe pain and decreased functional ability are diagnosed earlier, regardless of ACPA- status.

Disease burden measured by patient-reported outcomes: does psoriatic arthritis feel worse than rheumatoid arthritis? A cross-sectional nationwide study.

OBJECTIVES: To study the subjective disease burden of patients with psoriatic arthritis (PsA) and rheumatoid arthritis (RA), using patient-reported outcomes (PROs) cross-sectionally. METHODS: Data of 3598 patients with PsA and 13913 with RA were extracted from the database. Measures included the VAS-values of pain, fatigue and patient global assessment (PGA), HAQ, and disease activity at the most recent visit/remote contact in the period 1.2020 to 9.2021. Values were compared between patients with PsA and RA overall, and by sex and age (<50, 50-59, 60-69 and ≥70 years). Regression analyses were applied. RESULTS: The overall median (IQR)-values for pain were 29 (10, 56) for PsA and 26 (10, 51) for RA, 29 (9, 60) and 28 (8, 54) for fatigue, 28 (10, 52) and 29 (11, 51) for PGA, 0.4 (0, 0.9) and 0.5 (0, 1.0) for HAQ (p<0.001 for all comparisons; adjusted for sex and age). The median (IQR)-values for pain, fatigue, PGA and HAQ were higher for PsA vs. RA in most age groups for males and females. All PROs were higher in older patients with both diagnoses. The median values for DAS28, doctor global assessment, ESR and CRP were 1.9 vs. 2.0, 8 vs. 8, 7 vs. 8 and 2 vs. 3 in PsA and RA, respectively. CONCLUSIONS: Overall, both PsA and RA groups showed moderate disease control by patients' perspective, but the burden of disease was higher especially in women with PsA compared to RA. Disease activity was similar and low in both diseases.

Real-world data on seropositive rheumatoid arthritis, then and now: ten-year outcomes of 1151 patients diagnosed between 1997 and 2011.

OBJECTIVES: To study 10-year outcomes in patients with early seropositive rheumatoid arthritis (RA) whether the outcomes improve over time. METHODS: Data of 1754 patients with early RA, diagnosed in 1997-2011 were explored; 66% (n=1151) were seropositive and included in the analyses. Patients were divided into five groups by diagnosis year: 1997-1999, 2000-2002, 2003-2005, 2006-2008 and 2009-2011. Clinical parameters including disease activity and function were compared between the groups. RESULTS: A total of 832 (72%) patients attended the 10-year visit, while 319 did not (e.g. 196 had died and 49 moved). The median (IQR) DAS28 decreased from 2.9 (2.2, 3.7) to 2.3 (1.4, 3.0) (p<0.001) between groups 1997-1999 and 2009-2011. The proportion of patients with 2 or more swollen joints on 46 joint count decreased from 33% to 13%, respectively. Median (IQR) pain decreased from 30 (15, 52) to 25 (6, 51) (p=0.03) and fatigue from 31 (12, 52) to 15 (2, 50) (p=0.012). Median (IQR) dr.global decreased from 20 (5, 40) to 0 (0, 5) p<0.001. The proportion of patients with a HAQ-score of ≤0.5 increased from 39% to 49% (p=0.002). The proportion of patients that had used methotrexate by the 10-year visit increased from 79% to 96% (p<0.001) and the proportion of patients who had used bDMARDs increased from 11% to 28% (p=0.001), respectively. CONCLUSIONS: Several clinical outcomes were better in patients who were diagnosed more recently. More intensive use of medications over time might have contributed to these improvements.