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Li R, Yuan X, Ou Y. Global burden of rheumatoid arthritis among adolescents and young adults aged 10-24 years: A trend analysis study from 1990 to 2019. PLoS One 2024; 19:e0302140. [PMID: 38625989 PMCID: PMC11020938 DOI: 10.1371/journal.pone.0302140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/28/2024] [Indexed: 04/18/2024] Open
Abstract
BACKGROUND In recent decades, there has been a global increase in the burden of rheumatoid arthritis (RA) among adolescents and young adults (AYAs), making it a significant public health issue. However, our understanding of the disease burden, harm, and influencing factors of RA in this population remains insufficient. This study aimed to assess the trends in RA burden among AYAs aged 10-24 years from 1990 to 2019 at the global, regional, and national levels. METHODS Incidence, prevalence, and disability-adjusted life years (DALYs) rate per 100,000 population, as well as average annual percentage changes (AAPCs), of RA among individuals aged 10-24 years were reported globally, regionally, and nationally based on the Global Burden of Diseases, Injuries, and Risk Factors Study 2019 (GBD 2019). These global trends were further analyzed by age, sex, and Sociodemographic index (SDI). Joinpoint regression analysis was used to determine the year in which the most significant changes in global trends occurred. RESULTS Globally, the incidence of RA among AYAs increased from 4.98 per 100,000 population in 1990 to 5.41 per 100,000 population in 2019, with an AAPCs of 0.29 (95%CI: 0.26, 0.32, p < 0.001). The most significant increase occurred in 2000, while the most significant decrease occurred in 2014. The prevalence increased from 34.11 per 100,000 population in 1990 to 36.34 per 100,000 population in 2019, with an AAPCs of 0.22 (95%CI: 0.19, 0.24, p<0.001); The most significant increase was observed in 2000, and the most significant decrease occurred in 2014. DALYs rate with RA were 5.96 per 100,000 population in 1990 and 5.79 per 100,000 population in 2019 for AYAs, with an average decrease of 0.1 years per year (AAPCs = -0.1, 95%CI: -0.2, -0.01, p = 0.04). In terms of gender, the incidence, prevalence, and DALYs rate were higher for females compared to males during the same period. Regarding age, the incidence, prevalence, and DALYs rate increased with increasing age. Based on the SDI quintile, the incidence, prevalence, and DALYs rate of RA were highest in countries with high SDI and lowest in countries with low SDI from 1990 to 2019. However, the relationship between incidence and SDI is non-linear. In terms of regions, Tropical Latin America exhibited the highest incidence, prevalence, and DALYs rate, while Andean Latin America experienced the most rapid increase in incidence and prevalence. Southern Latin America saw the fastest growth in DALYs rate, whereas Southern Sub-Saharan Africa witnessed the most significant decline. CONCLUSION In conclusion, the study revealed an overall increase in the incidence and prevalence of RA among adolescents and young adults (AYAs) over the past three decades, while DALYs rate remained relatively stable. Furthermore, the incidence, prevalence, and DALYs rate of RA were found to increase with age. Fortunately, recent proactive preventive measures and treatment methods have shown promising results. Moving forward, it is crucial to prioritize the female population and AYAs patients in order to further alleviate the global burden of RA.
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Affiliation(s)
- Ruibo Li
- Department of Orthopaedics, Deyang Peoples’ Hospita, Deyang, Sichuan, China
- Deyang Clinical College, Chengdu University of Traditional Chinese Medicine, Deyang, Sichuan, China
| | - Xingyue Yuan
- Department of Pathology, Deyang Peoples’ Hospita, Deyang, Sichuan, China
| | - Yili Ou
- Deyang Clinical College, Chengdu University of Traditional Chinese Medicine, Deyang, Sichuan, China
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Moon DH, Kim A, Song BW, Kim YK, Kim GT, Ahn EY, So MW, Lee SG. High Baseline Neutrophil-to-Lymphocyte Ratio Could Serve as a Biomarker for Tumor Necrosis Factor-Alpha Blockers and Their Discontinuation in Patients with Ankylosing Spondylitis. Pharmaceuticals (Basel) 2023; 16:ph16030379. [PMID: 36986479 PMCID: PMC10055887 DOI: 10.3390/ph16030379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/22/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
Background: This study explores the association of neutrophil-to-lymphocyte (NLR), monocyte-to-lymphocyte (MLR), and platelet-to-lymphocyte (PLR) ratios with the 3-month treatment response and persistence of tumor necrosis factor-alpha (TNF-α) blockers in patients with ankylosing spondylitis (AS). Methods: This retrospective cohort study investigated 279 AS patients who were newly initiated on TNF-α blockers between April 2004 and October 2019 and 171 sex- and age-matched healthy controls. Response to TNF-α blockers was defined as a reduction in the Bath AS Disease Activity Index of ≥50% or 20 mm, and persistence referred to the time interval from the initiation to discontinuation of TNF-α blockers. Results: Patients with AS had significantly increased NLR, MLR, and PLR ratios as compared to controls. The frequency of non-response at 3 months was 3.7%, and TNF-α blockers’ discontinuation occurred in 113 (40.5%) patients during the follow-up period. A high baseline NLR but not high baseline MLR and PLR showed an independently significant association with a higher risk of non-response at 3 months (OR = 12.3, p = 0.025) and non-persistence with TNF-α blockers (HR = 1.66, p = 0.01). Conclusions: NLR may be a potential marker for predicting the clinical response and persistence of TNF-α blockers in AS patients.
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Affiliation(s)
- Dong-Hyuk Moon
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan 49241, Republic of Korea; (D.-H.M.); (A.K.); (B.-W.S.)
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| | - Aran Kim
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan 49241, Republic of Korea; (D.-H.M.); (A.K.); (B.-W.S.)
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| | - Byung-Wook Song
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan 49241, Republic of Korea; (D.-H.M.); (A.K.); (B.-W.S.)
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
| | - Yun-Kyung Kim
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Kosin University, Busan 49104, Republic of Korea; (Y.-K.K.); (G.-T.K.)
| | - Geun-Tae Kim
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Kosin University, Busan 49104, Republic of Korea; (Y.-K.K.); (G.-T.K.)
| | - Eun-Young Ahn
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Yangsan Hospital, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea; (E.-Y.A.); (M.-W.S.)
| | - Min-Wook So
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Yangsan Hospital, School of Medicine, Pusan National University, Yangsan 50612, Republic of Korea; (E.-Y.A.); (M.-W.S.)
| | - Seung-Geun Lee
- Division of Rheumatology, Department of Internal Medicine, Pusan National University Hospital, Pusan National University School of Medicine, Busan 49241, Republic of Korea; (D.-H.M.); (A.K.); (B.-W.S.)
- Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea
- Correspondence: ; Tel.: +82-51-240-7225
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Yue X, Huang B, Hincapie AL, Wigle PR, Li Y, Qiu T, Lovell DJ, Morgan EM, Guo JJ. Comparative effectiveness and persistence of TNFi and non-TNFi in juvenile idiopathic arthritis: a large paediatric rheumatology centre in the USA. Rheumatology (Oxford) 2021; 60:4063-4073. [PMID: 34469569 PMCID: PMC10452955 DOI: 10.1093/rheumatology/keaa877] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/25/2020] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVE To evaluate the persistence and effectiveness of TNF inhibitors (TNFi) vs non-TNFi among newly diagnosed JIA patients after initiation of biologic DMARD (bDMARD). METHODS Using longitudinal patient-level data extracted from electronic medical records in a large Midwestern paediatric hospital from 2009 to 2018, we identified JIA patients initiating TNFi and non-TNFi treatment. Treatment effectiveness was assessed based on disease activity. Inverse probability of treatment weighting of propensity score was used to estimate the treatment effectiveness and Kaplan-Meier analyses were conducted to assess persistence. RESULTS Of 667 JIA patients, most (92.0%) were prescribed one of the class of TNFi as their initial biologic treatment. Etanercept was the most frequently prescribed (67.1%) treatment, followed by adalimumab (27.5%). Only around 5% of patients were prescribed off-label bDMARDs as their first-course treatment; however, >20% were prescribed off-label biologics as their second-course therapy. Some 7.2% of patients received four or more bDMARDs. The median persistence of the first-course bDMARD is 320 days, with TNFi being significantly longer than the non-TNFi (395 vs 320 days, P = 0.010). The clinical Juvenile Disease Activity Score (cJADAS) reduction of TNFi users (6.6, 95% CI 5.7, 7.5) was significant greater compared with non-TNFi users (3.0, 95% CI 1.5, 4.6, P < 0.0001) at 6-month follow-up visit. CONCLUSION Persistence was significantly longer among patients initiating TNFi as their first biologic therapy than those receiving non-TNFi. Patients receiving TNF therapy had significant greater reduction of cJADAS at the 6-month follow-up visit compared with patients in the non-TNF cohort.
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Affiliation(s)
- Xiaomeng Yue
- Division of Pharmacy Practice and Administrative Sciences, James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center
| | - Bin Huang
- Division of Biostatistics and Epidemiology, Cincinnati Children’s Hospital Medical Center
- Department of Pediatrics, University of Cincinnati College of Medicine
| | - Ana L Hincapie
- Division of Pharmacy Practice and Administrative Sciences, James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center
| | - Patricia R Wigle
- Division of Pharmacy Practice and Administrative Sciences, James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center
| | - Yuxiang Li
- Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine
| | - Tingting Qiu
- Division of Biostatistics and Epidemiology, Cincinnati Children’s Hospital Medical Center
| | - Daniel J Lovell
- Department of Pediatrics, University of Cincinnati College of Medicine
- Division of Rheumatology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Esi M Morgan
- Department of Pediatrics, University of Cincinnati College of Medicine
- Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine
- Division of Rheumatology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
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Mannion ML, Xie F, Horton DB, Ringold S, Correll CK, Dennos A, Beukelman T. Biologic Switching Among Nonsystemic Juvenile Idiopathic Arthritis Patients: A Cohort Study in the Childhood Arthritis and Rheumatology Research Alliance Registry. J Rheumatol 2020; 48:1322-1329. [PMID: 32934124 DOI: 10.3899/jrheum.200437] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Biologic medications have significantly improved disease control and outcomes of patients with juvenile idiopathic arthritis (JIA). Current treatment recommendations suggest escalating therapy, including changing biologics if needed, when inactive or low disease activity is not attained. The patterns and reasons for switching biologics in clinical practice in North America are not well described. METHODS We used the Childhood Arthritis and Rheumatology Research Alliance Registry and included individuals with JIA if they newly started a biologic after January 1, 2008, and had at least 12 months of subsequent observable time. Subjects with systemic JIA were excluded. We compared characteristics of switchers and nonswitchers using chi-square for categorical variables and Wilcoxon rank-sum test for continuous variables, and used linear regression for time analysis. RESULTS Of the eligible children, 1361 with JIA in the registry started a biologic (94% tumor necrosis factor inhibitors [TNFi]). Median followup time was 30 months and 349 (26%) switched biologics. Among biologic switchers, ineffectiveness/disease flare was the most common reason for switch (202, 58%). The most common documented switch was from etanercept to another TNFi (221, 63%). The median time to switch to a second biologic decreased substantially from 55.2 months in 2008 to 7.2 months in 2016. CONCLUSION In a multicenter cohort of patients with JIA starting a biologic, one-quarter switched to a second biologic, and the time to switching decreased in recent years. Additional studies should evaluate the outcomes and optimal timing of switching and preferred sequence of biologic use.
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Affiliation(s)
- Melissa L Mannion
- M.L. Mannion, MD, MSPH, Assistant Professor, T. Beukelman, MD, MSCE, Associate Professor, Division of Pediatric Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama;
| | - Fenglong Xie
- F. Xie, PhD, MS, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Daniel B Horton
- D.B. Horton, MD, MSCE, Assistant Professor, Department of Pediatrics, Rutgers Robert Wood Johnson Medical School, and Rutgers Center for Pharmacoepidemiology and Treatment Science, Institute for Health, Health Care Policy and Aging Research, New Brunswick, and Department of Biostatistics and Epidemiology, Rutgers School of Public Health, Piscataway, New Jersey
| | - Sarah Ringold
- S. Ringold, MD, MS, Assistant Professor, Division of Pediatric Rheumatology, Seattle Children's Hospital, Seattle, Washington
| | - Colleen K Correll
- C.K. Correll, MD, MPH, Assistant Professor, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Anne Dennos
- A. Dennos, MSPH, Duke Clinical Research Institute, Duke University, Durham, North Carolina, USA
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Khilfeh I, Guyette E, Watkins J, Danielson D, Gross D, Yeung K. Adherence, Persistence, and Expenditures for High-Cost Anti-Inflammatory Drugs in Rheumatoid Arthritis: An Exploratory Study. J Manag Care Spec Pharm 2019; 25:461-467. [PMID: 30917076 PMCID: PMC10398092 DOI: 10.18553/jmcp.2019.25.4.461] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Drugs for inflammatory conditions are one of the highest expenditure therapeutic classes for health plans. Published literature for adherence, persistence, nonadherence risk factors, and health care costs are incomplete for newer biologic agents. OBJECTIVES To (a) examine differences in adherence, persistence, switch patterns, and health care costs among high-cost specialty anti-inflammatory medications and (b) suggest risk factors for nonadherence in rheumatoid arthritis. METHODS In this exploratory retrospective cohort study, we used medical and pharmacy claims from 1.2 million enrollees in commercial health plans administrated by Premera Blue Cross, the largest not-for-profit health plan in the Pacific Northwest. We included members with rheumatoid arthritis who used the following high-cost disease-modifying antirheumatic drugs: abatacept, adalimumab, anakinra, apremilast, certolizumab, etanercept, golimumab, infliximab, rituximab, sekukinumab, tocilizumab, tofacitinib, and ustekinumab. Adherence was calculated via medication possession ratio. Persistence was calculated as the amount of days between the initial fill and final fill plus days supply. Switch rates for adalimumab and etanercept were calculated as the percentage of members who switched to another target drug during the observation period. Direct medical costs (total health care costs) and health care costs excluding specialty agents were calculated using the net allowable amount per claim for the duration of each therapy. Adherence, persistence, and costs of care were also examined for concurrent methotrexate use for the most used target drugs. RESULTS The most commonly used drugs were abatacept (n = 47), adalimumab (n = 226), and etanercept (n = 252). Nonadherence in certain subgroups was associated with higher mean monthly health care costs, excluding specialty agents (etanercept cohort: +$1,063 for nonmethotrexate users; +$492 for nonadherent methotrexate users), but adherence was associated with higher total health care costs (+$883 for etanercept). Relative to specialty pharmacies, retail was associated with 9% higher nonadherence. Concurrent methotrexate use was associated with higher persistence (+307 and +192 days with adalimumab and etanercept). The most commonly switched-to drug after adalimumab/etanercept was abatacept (n = 39). CONCLUSIONS This exploratory study raises signals suggesting that retail pharmacies may be associated with higher nonadherence; nonadherence may be associated with increased health care costs, excluding specialty agents; adherence may increase total health care costs; and methotrexate use may be associated with increased persistence. Future research should confirm these findings. DISCLOSURES This research was part of an internship awarded to Khilfeh by the AMCP Foundation/Pfizer Summer Internship Program and funded by Pfizer. Gross is an employee of Pfizer. The other authors have nothing to disclose. A portion of this research was presented at the AMCP Managed Care & Specialty Pharmacy Annual Meeting as a continuing education session entitled "The Evolving Role of Real-World Data in Health Care Decision Making" on March 29, 2017, in Denver, CO, and at AMCP Nexus 2016 as a poster on October 3-6, 2016, in National Harbor, MD.
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Affiliation(s)
| | - Eric Guyette
- Premera Blue Cross, Mountlake Terrace, Washington
| | - John Watkins
- University of Washington School of Pharmacy, Seattle, and Premera Blue Cross, Mountlake Terrace, Washington
| | | | | | - Kai Yeung
- Kaiser Permanente Washington Health Research Institute, Seattle
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Lee HN, Kim YK, Kim GT, Ahn E, So MW, Sohn DH, Lee SG. Neutrophil-to-lymphocyte and platelet-to-lymphocyte ratio as predictors of 12-week treatment response and drug persistence of anti-tumor necrosis factor-α agents in patients with rheumatoid arthritis: a retrospective chart review analysis. Rheumatol Int 2019; 39:859-868. [DOI: 10.1007/s00296-019-04276-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 03/08/2019] [Indexed: 12/19/2022]
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Lee WJ, Lee TA, Suda KJ, Calip GS, Briars L, Schumock GT. Risk of serious bacterial infection associated with tumour necrosis factor-alpha inhibitors in children with juvenile idiopathic arthritis. Rheumatology (Oxford) 2018; 57:273-282. [PMID: 28431162 DOI: 10.1093/rheumatology/kex049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Indexed: 01/29/2023] Open
Abstract
Objectives TNF-α inhibitors (TNFIs) have a black box warning for increased risk of serious infection that was based on evidence from studies of adults. Evidence of the association is lacking for children. We aimed to examine the risk of infection posed by TNFIs compared with DMARDs in children with JIA. Methods We conducted a cohort study using the 2009-13 Truven MarketScan Commercial Claims and Encounters database. Children <16 years old with JIA who initiated monotherapy with TNFIs or DMARDs were identified and followed for occurrence of serious bacterial infection requiring hospitalization. Cox proportional hazard models were used to estimate hazard ratios for infection associated with TNFIs compared with DMARDs, adjusting for potential confounders with high-dimensional propensity scores and time-varying CS use. Results We identified 2013 DMARD initiators and 482 TNFI initiators with a mean follow-up of 255 and 307 days, respectively. We identified 18 and 11 patients with a serious infection in the DMARD and TNFI groups, resulting in crude rates of 1.28 (95% CI 0.76-2.02) and 2.72 (95%CI 1.36-4.86) per 100 person-years, respectively. In adjusted models, TNFIs were associated with an increased risk of serious bacterial infection compared with DMARDs (adjusted hazard ratio 2.72, 95% CI: 1.08, 6.86). Conclusion Use of TNFIs poses a higher risk of serious infection compared with DMARDs in children with JIA. Our analysis confirms the US Food and Drug Administration warning about TNFI-associated infection in children with JIA.
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Affiliation(s)
- Wan-Ju Lee
- Department of Pharmacy Systems, Outcomes and Policy, Chicago, IL, USA
| | - Todd A Lee
- Department of Pharmacy Systems, Outcomes and Policy, Chicago, IL, USA.,Center of Pharmacoepidemiology and Pharmacoeconomic Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Katie J Suda
- Department of Pharmacy Systems, Outcomes and Policy, Chicago, IL, USA.,Center of Pharmacoepidemiology and Pharmacoeconomic Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA.,Center of Innovation for Complex Chronic Healthcare, Hines VA Hospital, Hines, Chicago, IL, USA
| | - Gregory S Calip
- Department of Pharmacy Systems, Outcomes and Policy, Chicago, IL, USA.,Center of Pharmacoepidemiology and Pharmacoeconomic Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Leslie Briars
- Department of Pharmacy Practice, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
| | - Glen T Schumock
- Department of Pharmacy Systems, Outcomes and Policy, Chicago, IL, USA.,Center of Pharmacoepidemiology and Pharmacoeconomic Research, College of Pharmacy, University of Illinois at Chicago, Chicago, IL, USA
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Calip GS, Adimadhyam S, Xing S, Rincon JC, Lee WJ, Anguiano RH. Medication adherence and persistence over time with self-administered TNF-alpha inhibitors among young adult, middle-aged, and older patients with rheumatologic conditions. Semin Arthritis Rheum 2017; 47:157-164. [PMID: 28410817 DOI: 10.1016/j.semarthrit.2017.03.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 02/01/2017] [Accepted: 03/15/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Self-injectable TNF inhibitors are increasingly used early in the chronic treatment of moderate to severe rheumatologic conditions. We estimated medication adherence/persistence over time following initiation in young adult and older adult patients with rheumatoid arthritis, ankylosing spondylitis or psoriatic arthritis. METHODS We conducted a retrospective cohort study of patients aged 18+ years newly initiating etanercept, adalimumab, certolizumab pegol, or golimumab using the Truven Health MarketScan Database between 2009 and 2013. Pharmacy dispensing data were used to calculate 12-month medication possession ratios (MPR) and determine adherence (MPR ≥ 0.80) for up to 3 years after starting therapy. Persistence over each 12-month interval was defined as not having a ≥92-day treatment gap. Multivariable generalized estimating equation models were used to calculate odds ratios (OR) and robust 95% confidence intervals (CI) for associations between patient characteristics and repeated adherence/persistence measures over time. RESULTS Among 53,477 new users, 14% were young adults (18-34 years), 49% middle-aged (35-54 years), and 37% older adults (55+ years). Overall, 37% of patients were adherent and 83% were persistent in the first year of therapy. The lowest adherence (17%) and persistence (70%) were observed among young adult patients by Year +3. Compared to older adults, middle-aged (OR = 0.73, 95% CI: 0.71-0.76) and young adults (OR = 0.50, 95% CI: 0.47-0.53) were less likely to be adherent. Higher Charlson comorbidity scores, hospitalizations, and emergency department visits were associated with non-adherence/non-persistence. CONCLUSIONS We observed low adherence to self-administered TNF inhibitors but most patients remained persistent over time. Further efforts to improve adherence in young adults and patients with greater comorbidity are needed.
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Affiliation(s)
- Gregory S Calip
- Center for Pharmacoepidemiology and Pharmacoeconomic Research, University of Illinois at Chicago, 833 S. Wood St. MC 871, Chicago, IL 60612; Division of Public Health Sciences, Epidemiology Program, Fred Hutchinson Cancer Research Center, Seattle, WA.
| | - Sruthi Adimadhyam
- Center for Pharmacoepidemiology and Pharmacoeconomic Research, University of Illinois at Chicago, 833 S. Wood St. MC 871, Chicago, IL 60612
| | - Shan Xing
- Center for Pharmacoepidemiology and Pharmacoeconomic Research, University of Illinois at Chicago, 833 S. Wood St. MC 871, Chicago, IL 60612
| | - Julian C Rincon
- Center for Pharmacoepidemiology and Pharmacoeconomic Research, University of Illinois at Chicago, 833 S. Wood St. MC 871, Chicago, IL 60612
| | - Wan-Ju Lee
- Center for Pharmacoepidemiology and Pharmacoeconomic Research, University of Illinois at Chicago, 833 S. Wood St. MC 871, Chicago, IL 60612
| | - Rebekah H Anguiano
- Department of Pharmacy Practice, University of Illinois at Chicago, Chicago, IL
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