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Pfefferle A, Binder N, Sauer J, Sofroniou M, Metzner G, Farin E, Voigt-Radloff S, Maun A, Salm C. Association between continuity of care and inappropriate prescribing in outpatient care in Germany: a cross-sectional analysis conducted as part of the LoChro trial. BMJ Open 2024; 14:e082245. [PMID: 39038858 PMCID: PMC11268059 DOI: 10.1136/bmjopen-2023-082245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 06/30/2024] [Indexed: 07/24/2024] Open
Abstract
OBJECTIVES Potentially inappropriate medications (PIMs) and potential prescribing omissions (PPOs) are common in multimorbid patients. This study aims to describe PIMs and PPOs in an open-access outpatient setting and to investigate any association between continuity of care (CoC) and PIMs and PPOs in multimorbid older patients. DESIGN Cross-sectional study using patient-confirmed outpatient medication plans to describe PIMs and PPOs using the 'Screening Tool of Older Person's Prescription/Screening Tool to Alert to Right Treatment' version 2. Four Poisson regressions modelled the number of PIMs and PPOs using context-adapted versions of the Usual Provider of Care (UPC) and the Modified Modified Continuity Index (MMCI) as measures for CoC. SETTING Southern Germany, outpatient setting. PARTICIPANTS 321 participants of the LoChro-trial at 12-month follow-up (both arms). The LoChro-trial compared healthcare involving an additional care manager with usual care. Inclusion criteria were age over 64, local residence and scoring over one in the Identification of Older patients at Risk Screening Tool. PRIMARY OUTCOMES Numbers of PIMs and PPOs. RESULTS The mean number of PIMs was 1.5 (SD 1.5), lower than the average number of PPOs at 2.9 (SD 1.7). CoC showed similar results for both indices with a mean of 0.548 (SD 0.279) for MMCI and 0.514 (SD 0.262) for UPC. Both models predicting PPOs indicated more PPOs with higher CoC; statistical significance was only demonstrated for MMCI (MMCI~PPO: Exp(B)=1.42, 95% CI (1.11; 1.81), p=0.004; UPC~PPO: Exp(B)=1.29, 95% CI (0.99; 1.67), p=0.056). No significant association between PIMs and CoC was found (MMCI~PIM: Exp(B)=0.72, 95% CI (0.50; 1.03), p=0.072; UPC~PIM: Exp(B)=0.83, 95% CI (0.57; 1.21), p=0.337). CONCLUSION The results did not show a significant association between higher CoC and lesser PIMs. Remarkably, an association between increased CoC, represented through MMCI, and more PPOs was found. Consultation of different care providers in open-access healthcare systems could possibly ameliorate under-prescribing in multimorbid older patients. TRIAL REGISTRATION German Clinical Trials Register (DRKS): DRKS00013904.
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Affiliation(s)
- Aline Pfefferle
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
| | - Nadine Binder
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
| | - Julia Sauer
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
| | - Mario Sofroniou
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
- Wyvern Health Partnership, NHS Bath Gloucestershire Swindon and Wiltshire Local Area Team, Swindon, UK
| | - Gloria Metzner
- Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Erik Farin
- Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Sebastian Voigt-Radloff
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
- Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Andy Maun
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
| | - Claudia Salm
- Insitute of General Practice/Family Medicine, Medical Center, University of Freiburg Faculty of Medicine, Freiburg, Germany
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Alaeddin N, Jongejan RMS, Stingl JC, de Rijke YB, Peeters RP, Breteler MMB, de Vries FM. Over- and Undertreatment With Levothyroxine. DEUTSCHES ARZTEBLATT INTERNATIONAL 2023; 120:711-718. [PMID: 37656481 DOI: 10.3238/arztebl.m2023.0192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/07/2023] [Accepted: 08/07/2023] [Indexed: 09/02/2023]
Abstract
BACKGROUND Levothyroxine is a very commonly prescribed drug, and treatment with it is often insufficient or excessive. Nonetheless, there have been only a few reports on the determinants of inadequate levothyroxine treatment. METHODS Data from 2938 participants in the population-based Rhineland Study were analyzed. Putative determinants of inadequate levothyroxine treatment (overtreatment, thyrotropin level <0.56 mU/L; undertreatment, thyrotropin level >4.27 mU/L) were studied with logistic regression. The determinants of the levothyroxine dose were assessed with linear regression. RESULTS Overall, 23% of the participants (n = 662) stated that they were taking levothyroxine. Among these participants, 18% were overtreated and 4% were undertreated. Individuals over 70 years of age and above were four times as likely to be overtreated (OR = 4.05, 95% CI [1.20; 13.72]). Each rise in the levothyroxine dose by 25 μg was associated with an increased risk of overtreatment (OR = 1.02, 95% CI [1.02; 1.03]) and of undertreatment (OR = 1.02, 95% CI [1.00; 1.03]). Well-controlled participants (normal thyrotropin levels 0.56-4.27 mU/L) received a lower levothyroxine dose (1.04 ± 0.5 μg/kg/d) than overtreated (1.40 ±0.5 μg/kg/d) or undertreated (1.37 ±0.5 μg/kg/d) participants. No association was found between sociodemographic factors or comorbidities and the levothyroxine dose. Iodine supplementation was associated with a lower daily dose (β = -0.19, 95% CI [-0.28; -0.10]), while three years or more of levothyroxine exposure was associated with a higher daily dose (β = 0.24, 95% CI [0.07; 0.41]). CONCLUSION Levothyroxine intake was high in our sample, and suboptimal despite monitoring. Our findings underscore the need for careful dosing and for due consideration of deintensification of treatment where appropriate.
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Affiliation(s)
- Nersi Alaeddin
- Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany; Department of Clinical Chemistry, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Internal Medicine, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Institute of Clinical Pharmacology, Faculty of Medicine, RWTH Aachen, Germany; Academic Centre for Thyroid Diseases, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Institute for Medical Biometry, Informatics and Epidemiology (IMBIE), Faculty of Medicine, University of Bonn, Bonn, Germany
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Xue Qin QN, Ming LC, Abd Wahab MS, Tan CS, Yuda A, Hermansyah A. Drug-related problems among older people with dementia: A systematic review. Res Social Adm Pharm 2023; 19:873-881. [PMID: 36914513 DOI: 10.1016/j.sapharm.2023.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/11/2023] [Accepted: 02/25/2023] [Indexed: 03/05/2023]
Abstract
INTRODUCTION Dementia is a disorder that causes a decline of cognitive function, and it affects millions of people worldwide. Increased availability of medications used to treat dementia will inevitably increase the likelihood of drug-related problems (DRPs). OBJECTIVE This systematic review sought to identify DRPs due to medication misadventures, including adverse drug reactions (ADRs), and use of inappropriate medications, among patients with dementia or cognitive impairments. METHODS The included studies were retrieved from the electronic databases PubMed and SCOPUS, and a preprint platform (MedRXiv) which were searched from their inception through August 2022. The English-language publications that reported DRPs among dementia patients were included. The JBI Critical Appraisal Tool for quality assessment was used to evaluate the quality of studies included in the review. RESULTS Overall, 746 distinct articles were identified. Fifteen studies met the inclusion criteria and reported the most common DRPs, which comprised medication misadventures (n = 9), such as ADRs, inappropriate prescription use, and potentially inappropriate medication use (n = 6). CONCLUSION This systematic review provides evidence that DRPs are prevalent among dementia patients, particularly the older people. It indicates that medication misadventures such as ADRs and inappropriate drug use, as well as potentially inappropriate medications, are the most prevalent DRPs among older people with dementia. Due to the small number of included studies, however, additional studies are required to improve comprehension about the issue.
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Affiliation(s)
- Qlaementine Ng Xue Qin
- Pengiran Anak Puteri Rashidah Sa'adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, BE1410, Brunei Darussalam.
| | - Long Chiau Ming
- Pengiran Anak Puteri Rashidah Sa'adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, BE1410, Brunei Darussalam; Department of Pharmacy Practice, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia; School of Medical and Life Sciences, Sunway University, Sunway City, Malaysia.
| | - Mohd Shahezwan Abd Wahab
- Department of Pharmacy Practice, Faculty of Pharmacy, Puncak Alam Campus, Universiti Teknologi MARA Cawangan Selangor, Bandar Puncak Alam 45350, Malaysia; Cardiology Therapeutics Research Group, Universiti Teknologi MARA, Bandar Puncak Alam 45350, Malaysia
| | - Ching Siang Tan
- School of Pharmacy, KPJ Healthcare University College, Nilai, Malaysia
| | - Ana Yuda
- Department of Pharmacy Practice, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Andi Hermansyah
- Department of Pharmacy Practice, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia.
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Inhalation therapies in COPD - adverse drug reactions impact on emergency department presentations. Eur J Clin Pharmacol 2023; 79:219-227. [PMID: 36484792 PMCID: PMC9879805 DOI: 10.1007/s00228-022-03433-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
PURPOSE Inhaled drugs have been cornerstones in the treatment of chronic obstructive pulmonary disease (COPD) for decades and show a high prescription volume. Due to the local application, drug safety issues of these therapies are often underestimated by professionals and patients. Data about adverse drug reactions (ADRs) caused by inhaled therapy in patients with COPD and polypharmacy are rare. We aimed to analyze the use and relevance of inhaled therapies in those patients in relation to ADR complaints, which were severe enough to warrant presentation to the emergency department. METHODS Emergency department cases due to suspected ADRs of the ADRED database (n = 2939, "Adverse Drug Reactions in Emergency Departments"; DRKS-ID: DRKS00008979, registration date 01/11/2017) were analyzed for inhaled drugs in patients with COPD. ADRs in cases with overdosed inhaled drugs were compared to non-overdosed cases. ADRs, potentially caused by inhaled drugs, were evaluated, clustered into complexes, and assessed for association with inhaled drug classes. RESULTS Of the 269 included COPD cases, 67% (n = 180) received inhaled therapy. In 16% (n = 28), these therapies were overdosed. Overdosed cases presented the complexes of malaise and local symptoms more frequently. Related to the use of inhaled anticholinergics, local (dysphagia-like) and related to inhaled beta-2 agonists, local (dysphagia-like) and sympathomimetic-like ADRs presented more frequently. CONCLUSION Overdosed inhaled therapies in patients with COPD lead to relevant ADRs and impact on emergency room presentations. These are rarely associated to inhaled therapy by healthcare professionals or patients. Due to the high volume of inhaled drug prescriptions, pharmacovigilance and patient education should be more focused in patients with COPD. German Clinical Trial Register: DRKS-ID: DRKS00008979.
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Liu Y, Yang M, Ding Y, Wang H, Zhang H, Wang D, Zhuang T, Ji M, Cui Y, Wang H. Clinical significance of potential drug-drug interactions in older adults with psychiatric disorders: a retrospective study. BMC Psychiatry 2022; 22:563. [PMID: 35996119 PMCID: PMC9394082 DOI: 10.1186/s12888-022-04207-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 08/12/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Polypharmacy increases the risk of potential drug-drug interactions (pDDIs). This retrospective analysis was conducted to detect pDDIs and adverse drug reactions (ADRs) among older adults with psychiatric disorder, and identify pDDIs with clinical significance. METHODS A retrospective analysis was carried out based on the medical records of older adults with psychiatric disorders. Data on demographic characteristics, substance abuse, medical history, and medications were extracted. The Lexi-Interact online database was used to detect pDDIs. The minimal clinically important difference (MCID) was set as the change in the Treatment Emergent Symptom Scale (TESS) score between admission and discharge. The median and interquartile ranges were used for continuous variables, and frequencies were calculated for dichotomous variables. Poisson regression was implemented to determine the factors influencing the number of ADR types. The influencing factors of each ADR and the clinical significance of the severity of the ADR were analysed using binary logistic regression. P < 0.05 was considered statistically significant. RESULTS A total of 308 older adults were enrolled, 171 (55.52%) of whom had at least 1 pDDI. Thirty-six types of pDDIs that should be avoided were found, and the most frequent pDDI was the coadministration of lorazepam and olanzapine (55.5%). A total of 26 ADRs induced by pDDIs were identified, and the most common ADR was constipation (26.05%). There was a 9.4 and 10.3% increase in the number of ADR types for each extra medical diagnosis and for each extra drug, respectively. There was a 120% increase in the number of ADR types for older adults hospitalized for 18-28 days compared with those hospitalized for 3-17 days. There was an 11.1% decrease in the number of ADR types for each extra readmission. The length of hospitalization was a risk factor for abnormal liver function (P < 0.05). The use of a large number of drugs was a risk factor for gastric distress (P < 0.05) and dizziness and fainting (P < 0.05). None of the four pDDIs, including coadministrations of olanzapine and lorazepam, quetiapine and potassium chloride, quetiapine and escitalopram, and olanzapine and clonazepam, showed clinical significance of ADR severity (P > 0.05). CONCLUSIONS pDDIs are prevalent in older adults, and the rate is increasing. However, many pDDIs may have no clinical significance in terms of ADR severity. Further research on assessing pDDIs, and possible measures to prevent serious ADRs induced by DDIs is needed to reduce the clinical significance of pDDIs.
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Affiliation(s)
- Yu Liu
- grid.89957.3a0000 0000 9255 8984Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, Jiangsu Province P.R. China 211166 ,grid.89957.3a0000 0000 9255 8984Department of Nursing Management, Kangda College, Nanjing Medical University, Lianyungang, Jiangsu Province P.R. China 222000
| | - Man Yang
- grid.89957.3a0000 0000 9255 8984Department of Psychiatry, The Fourth People’s Hospital of Lianyungang, Affiliated to Kangda College, Nanjing Medical University, Lianyungang, Jiangsu Province P.R. China 222003
| | - Yaping Ding
- grid.89957.3a0000 0000 9255 8984Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, Jiangsu Province P.R. China 211166
| | - Huanqiang Wang
- grid.89957.3a0000 0000 9255 8984Department of Occupational Medicine and Environmental Health, Kangda College, Nanjing Medical University, Lianyungang, Jiangsu Province P.R. China 222000
| | - Hailin Zhang
- grid.460072.7Department of Nursing, The First People’s Hospital of Lianyungang, Affiliated to Kangda College, Nanjing Medical University, Lianyungang, Jiangsu Province P.R. China 222061
| | - Dandan Wang
- grid.89957.3a0000 0000 9255 8984Department of Fundamental Nursing, Kangda College, Nanjing Medical University, Lianyungang, Jiangsu Province, P.R. China 222000
| | - Tianchi Zhuang
- grid.89957.3a0000 0000 9255 8984Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, Jiangsu Province P.R. China 211166
| | - Minghui Ji
- Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China, 211166.
| | - Yan Cui
- Department of Fundamental and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China, 211166.
| | - Hong Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital with Nanjing Medical University, Nanjing, Jiangsu Province, P.R. China, 210029.
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Lee GB, Etherton-Beer C, Hosking SM, Pasco JA, Page AT. The patterns and implications of potentially suboptimal medicine regimens among older adults: a narrative review. Ther Adv Drug Saf 2022; 13:20420986221100117. [PMID: 35814333 PMCID: PMC9260603 DOI: 10.1177/20420986221100117] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 04/26/2022] [Indexed: 11/15/2022] Open
Abstract
In the context of an ageing population, the burden of disease and medicine use is
also expected to increase. As such, medicine safety and preventing avoidable
medicine-related harm are major public health concerns, requiring further
research. Potentially suboptimal medicine regimens is an umbrella term that
captures a range of indicators that may increase the risk of medicine-related
harm, including polypharmacy, underprescribing and high-risk prescribing, such
as prescribing potentially inappropriate medicines. This narrative review aims
to provide a background and broad overview of the patterns and implications of
potentially suboptimal medicine regimens among older adults. Original research
published between 1990 and 2021 was searched for in MEDLINE, using key search
terms including polypharmacy, inappropriate prescribing, potentially
inappropriate medication lists, medication errors, drug interactions and drug
prescriptions, along with manual checking of reference lists. The review
summarizes the prevalence, risk factors and clinical outcomes of polypharmacy,
underprescribing and potentially inappropriate medicines. A synthesis of the
evidence regarding the longitudinal patterns of polypharmacy is also provided.
With an overview of the existing literature, we highlight a number of key gaps
in the literature. Directions for future research may include a longitudinal
investigation into the risk factors and outcomes of extended polypharmacy,
research focusing on the patterns and implications of underprescribing and
studies that evaluate the applicability of tools measuring potentially
inappropriate medicines to study settings.
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Affiliation(s)
- Georgie B Lee
- Epi-Centre for Healthy Ageing, Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, HERB-Building Level 3, C/- University Hospital Geelong, 285 Ryrie Street, P.O. Box 281, Geelong, VIC 3220, Australia
| | | | - Sarah M Hosking
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong, VIC, Australia
| | - Julie A Pasco
- Institute for Mental and Physical Health and Clinical Translation (IMPACT), School of Medicine, Deakin University, Geelong, VIC, Australia
| | - Amy T Page
- WA Centre for Health and Ageing, The University of Western Australia, Crawley, WA, Australia
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Prevalence of exposure to pharmacogenetic drugs by the Saudis treated at the health care centers of the Ministry of National Guard. Saudi Pharm J 2022; 30:1181-1192. [PMID: 36164570 PMCID: PMC9508627 DOI: 10.1016/j.jsps.2022.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 06/17/2022] [Indexed: 12/02/2022] Open
Abstract
Background The drugs impacted by genetic variants are known as pharmacogenetic (PGx) drugs. Patients’ responses to these drugs may vary according to the variability in patients’ genetic makeup. Hence, exploring the pharmacogenes that affect drug treatment is vital to ensure optimal therapy and patients’ safety. This study aimed to describe the usage rate of PGx drugs and the frequency of relevant variants in the Saudi population. Methodology Prescription patterns over seven years (2015–2021) for Saudi patients on PGx drugs treated at the Ministry of National Guard-Health Affairs (MNG-HA) were investigated. Only registered drugs in the MNG-HA formulary (n = 78) were included. The patients were subgrouped into four age groups: ≤24, 25–44, 45–64, and ≥65 years. Further subgrouping was made according to gender and drugs’ therapeutic categories following anatomical therapeutic chemical (ATC) classification. Furthermore, an online searching was carried out to identify the pharmacogenes reported in the literature among healthy Saudis. The search included 45 genes that may affect drug outcomes based on evidence rated by either CPIC (A-B levels) or PharmGKB (1–2 levels). Results The screened patients were 1,483,905. Patients on PGx drugs accounted for 46.7% (n = 693,077 patients). The analgesic group was the most prescribed drug category (47%), which included ibuprofen (20.5%), celecoxib (6.3%), tramadol (5.8%), and others. Cardiovascular agents were the second-most utilized drug class (24.4%). Omeprazole was the second most commonly used medication (11.1%) but ranked third as a class (gastroenterology). Females used PGx drugs more frequently than males (53.5% versus 46.5%) and a higher usage rate by patients aged 45–64 years (31.3%) was noted. The cytochrome P450 genes (CYP2C9, CYP2C19, and CYP2D6) were estimated to impact responses of 54.3% (n = 1,156,113) of the used drugs (27.2% are possibly affected by CYP2C9, 12.8% by CYP2C19, and 14.3% by CYP2D6). Thirty-five pharmacogenes that characterize Saudi population and their variants’ allele frequencies were identified from previous reports. This study presents the largest reported number of genes that may affect drug therapies among Saudis. Conclusion This study confirmed that a high percentage of Saudi patients use PGx drugs and various genotypes of certain pharmacogenes are inherited by the Saudi population.
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Alaeddin N, Stingl JC, Breteler MMB, de Vries FM. Validation of self-reported medication use applying untargeted mass spectrometry-based metabolomics techniques in the Rhineland study. Br J Clin Pharmacol 2021; 88:2380-2395. [PMID: 34907581 DOI: 10.1111/bcp.15175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 10/27/2021] [Accepted: 11/24/2021] [Indexed: 02/05/2023] Open
Abstract
AIMS To assess the validity of self-reported continuous medication use with drug metabolites measured in plasma by using untargeted mass spectrometric techniques. METHODS In a population-based cohort in Bonn, Germany, we compared interview-based, self-reported medication intake with drug-specific metabolites measured in plasma (based on participants who completed their study visits between March 2016 and February 2020). Analyses were done stratified by sex and age (<65 years vs ≥65 years). Cohen's kappa (κ) statistics with 95% confidence intervals (CI) were calculated. RESULTS A total of 13 drugs used to treat hypertension, gout, diabetes, epilepsy and depression were analysed in a sample of 4386 individuals (mean age 55 years, 56.1% women). Eleven drugs showed almost perfect agreement (κ > 0.8), whereas sitagliptin and hydrochlorothiazide showed substantial (κ = 0.8, 95% CI 0.71-0.90) and moderate agreement (κ = 0.61, 95% CI 0.56-0.66), respectively. Frequency of use allowed sex- and age-stratified analyses for eight and nine drugs, respectively. For five drugs, concordance tended to be higher for women than for men. For most drugs, concordance was higher among individuals aged ≥65 years than among individuals aged <65 years, but these age-related differences were not statistically significant. CONCLUSION High concordance rates between self-reported drug use and metabolites measured in plasma suggest that self-reported drug use is reliable and accurate for assessing drug use.
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Affiliation(s)
- Nersi Alaeddin
- Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Julia C Stingl
- Institute of Clinical Pharmacology, University Hospital of RWTH Aachen, Aachen, Germany
| | - Monique M B Breteler
- Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,Institute for Medical Biometry, Informatics and Epidemiology (IMBIE), Faculty of Medicine, University of Bonn, Germany
| | - Folgerdiena M de Vries
- Population Health Sciences, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
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