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Funding Information: IA reports personal fees from Roxall, Menarini, UCB, Faes Farma, Sanofi, Bial, Amgen, Abbott, Bayer, Organon. SBA reports grants from TEVA, personal fees from TEVA, AstraZeneca, Boehringer Ingelheim, GSK, Sanofi, Mylan. JB reports personal fees from Chiesi, Cipla, Hikma, Menarini, Mundipharma, Mylan, Novartis, Sanofi‐Aventis, Takeda, Teva, Uriach, other from KYomed‐Innov, personal fees from Purina, other from MASK‐air. VC reports personal fees from Thermofisher. PCM reports personal fees from Abbvie, AZ, Bial, GSK, Mylan, Medinfar, Novartis, Sanofi. LC reports personal fees from Malesci, Menarini, Astra Zeneca, Novartis. AC reports grants and personal fees from Astrazeneca, GSK, Sanofi, personal fees from Boehringer‐Ingelheim, Chiesi, Glenmark, Novartis, personal fees from Mylan, Abdi‐Ibrahim. PD reports personal fees and non‐financial support from Stallergenes Greer, ALK‐Abello, Astra Zeneca, CHIESI, MYLAN/Meda Pharma, Novartis, GlaxoSmithKline, Sanofi, IQVIA personal fees from MENARINI. JAFonseca reports participation in SME that has mHealth technologies for patients with asthma. JCI reports personal fees from Abbott Ecuador, Bago Bolivia, Faes Farma, Laboratorios Casasco, Sanofi. LK reports grants and personal fees from Allergopharma, LETI Pharma,MEDA/Mylan, Sanofi, personal fees from HAL Allergie, Allergy Therapeut., Cassella med, grants from ALK Abelló, Stallergenes, Quintiles, ASIT biotech, Lofarma, AstraZeneca, GSK, Inmunotk, and Membership: AeDA, DGHNO, Deutsche Akademie für Allergologie und klinische Immunologie, HNO‐BV, GPA, EAACI. VK reports other from Norameda, BerlinCHemie Menarini. PK reports personal fees from Adamed, AstraZeneca, Berlin Chemie Menarini, Boehringer Ingelheim, Chiesi, GSK, Novartis, Polpharma. DLL reports personal fees from Allakos, Amstrong, Astrazeneca, Chiesi, DBV Technologies, Grunenthal, GSK, Mylan/Viatris, Menarini, MSD, Novartis, Pfizer, Sanofi, Siegfried, UCB, Alakos, Gossamer, Carnot, grants from Sanofi, Astrazeneca, Novartis, Circassia, UCB, GSK, Purina institute, Abvvie, Lilly, Pfizer. BL reports grants and personal fees from Meda, personal fees from Glenamrk. RL reports grants and personal fees from GSK, AZ, Chiesi, personal fees from Novartis, Sanofi. MM reports personal fees from Novartis, Gsk, Menarini, Az, Chiesi, Sanofi, Pfizer. RM reports personal fees from Angelini Pharma ALK, Allergopharma, Allergy Therapeutics, Friulchem, Hexal, Servier, Klosterfrau, Bayer, FAES, GSK, MSD, Johnson&Johnson, Meda, Stada, UCB, Nuvo, Menarini, Mundipharma, Pohl‐Boskamp, Laboratoire de la Mer, Sidroga, Lek, PRO‐AdWise, grants and personal fees from Bencard, Stallergenes, Ursapharm, HAL BV, grants from Leti, Optima, BitopAG, Hulka, Inmunotek, Cassella‐med GmbH & Co. KG, ASIT biotech, grants, personal fees and non‐financial support from Lofarma, non‐financial support from Roxall, Atmos, Bionorica, Otonomy, Ferrero, personal fees and non‐financial support from Novartis. OP reports grants and personal fees from ALK‐Abelló, Allergopharma, Stallergenes Greer HAL Allergy Holding B.V./HAL Allergie GmbH, Bencard Allergie GmbH/Allergy Therapeutics, Lofarma, ASIT Biotech Tools S.A., Laboratorios LETI/LETI Pharma, Anergis S.A., GlaxoSmithKline, personal fees from MEDA Pharma/MYLAN, Mobile Chamber Experts (a GA2LEN Partner), Indoor Biotechnologies, Astellas Pharma Global, EUFOREA, ROXALL Medizin, Novartis, Sanofi‐Aventis and Sanofi‐Genzyme, Med Update Europe GmbH, streamedup! GmbH, John Wiley and Sons, AS, Paul‐Martini‐Stiftung (PMS), Regeneron Pharmaceuticals Inc., RG Aerztefortbildung, Institut für Disease Management, Springer GmbH, AstraZeneca, IQVIA Commercial, Ingress Health, grants from Pohl‐Boskamp, Inmunotek S.L., Biomay, Circassia. NGPapadopoulos reports personal fees from Novartis, Nutricia, HAL, MENARINI/FAES FARMA, SANOFI, MYLAN/MEDA, BIOMAY, AstraZeneca, GSK, MSD, ASIT BIOTECH, Boehringer Ingelheim, grants from Gerolymatos International SA, Capricare. ATB reports personal fees from AstraZeneca, GSK, Novartis, IQVIA/Abbvie, Mylan, Bial, Leti, grants and personal fees from Teva. STS reports personal fees from ERT, Roche products, Novartis, Sanofi Pharma, AstraZeneca, ALK‐ Abelló grants from Glaxo Smith Kline. IT reports grants from GSK, Boehringer Ingelheim, AZ, personal fees from Novartis, Astra Zeneca, Chiesi, TZ reports Organizational affiliations: Committee member: WHO‐Initiative “Allergic Rhinitis and Its Impact on Asthma” (ARIA); Member of the Board: German Society for Allergy and Clinical Immunology (DGAKI); Head: European Centre for Allergy Research Foundation (ECARF). President: Global Allergy and Asthma European Network (GA2LEN); Member: Committee on Allergy Diagnosis and Molecular Allergology, World Allergy Organization (WAO). Funding Information: MASK‐air® has been supported by EU grants (POLLAR, EIT Health; Structural and Development Funds, Twinning, EIP on AHA and H2020) and educational grants from Mylan‐Viatris, ALK, GSK, Novartis and Uriach 1 1 Publisher Copyright: © 2022 European Academy of Allergy and Clinical Immunology and John Wiley & Sons Ltd. Background: Different treatments exist for allergic rhinitis (AR), including pharmacotherapy and allergen immunotherapy (AIT), but they have not been compared using direct patient data (i.e., “real-world data”). We aimed to compare AR pharmacological treatments on (i) daily symptoms, (ii) frequency of use in co-medication, (iii) visual analogue scales (VASs) on allergy symptom control considering the minimal important difference (MID) and (iv) the effect of AIT. Methods: We assessed the MASK-air® app data (May 2015–December 2020) by users self-reporting AR (16–90 years). We compared eight AR medication schemes on reported VAS of allergy symptoms, clustering data by the patient and controlling for confounding factors. We compared (i) allergy symptoms between patients with and without AIT and (ii) different drug classes used in co-medication. Results: We analysed 269,837 days from 10,860 users. Most days (52.7%) involved medication use. Median VAS levels were significantly higher in co-medication than in monotherapy (including the fixed combination azelastine-fluticasone) schemes. In adjusted models, azelastine-fluticasone was associated with lower average VAS global allergy symptoms than all other medication schemes, while the contrary was observed for oral corticosteroids. AIT was associated with a decrease in allergy symptoms in some medication schemes. A difference larger than the MID compared to no treatment was observed for oral steroids. Azelastine-fluticasone was the drug class with the lowest chance of being used in co-medication (adjusted OR = 0.75; 95% CI = 0.71–0.80). Conclusion: Median VAS levels were higher in co-medication than in monotherapy. Patients with more severe symptoms report a higher treatment, which is currently not reflected in guidelines. publishersversion published

Co-medication is common among patients with allergic rhinitis (AR), but its dimension and patterns are unknown. This is particularly relevant since AR is understood differently across European countries, as reflected by rhinitis-related search patterns in Google Trends. This study aims to assess AR co-medication and its regional patterns in Europe, using real-world data.We analysed 2015-2020 MASK-airWe analysed 222,024 days (13,122 users), including 63,887 days (28.8%) under monotherapy and 38,315 (17.3%) under co-medication. The median 'VAS Global Symptoms' was 7 for no medication days, 14 for monotherapy and 21 for co-medication (p .001). Medication use peaked during the spring, with similar patterns across different European regions (defined geographically or by Google Trends). Oral HAllergic rhinitis medication patterns are similar across European regions. One third of treatment days involved co-medication. These findings suggest that patients treat themselves according to their symptoms (irrespective of how they understand AR) and that co-medication use is driven by symptom severity.