Worldwide time trends in prevalence of symptoms of rhinoconjunctivitis in children: Global Asthma Network Phase I. Issue 1 (21st September 2021)

• Record Type: Journal Article
• Authors: Strachan, David P.; Rutter, Charlotte E.; Asher, Monica Innes; Bissell, Karen; Chiang, Chen‐Yuan; El Sony, Asma; Ellwood, Eamon; Ellwood, Philippa; García‐Marcos, Luis; Marks, Guy B.; Morales, Eva; Mortimer, Kevin; Pearce, Neil; Pérez‐Fernández, Virginia; Robertson, Steven; Silverwood, Richard J.
• Editors: Genuneit, Jon
• Other Names: Navarrete‐Rodriguez EM investigator.; López‐Silvarrey Varela A investigator.; Asher MI investigator.; Bissell K investigator.; Chiang C‐Y investigator.; El Sony A investigator.; Ellwood P investigator.; García‐Marcos L investigator.; Mortimer K investigator.; Pearce N investigator.; Strachan DP investigator.; Ellwood P investigator.; Ellwood E investigator.; Asher MI investigator.; García‐Marcos L investigator.; Perez‐Fernández V investigator.; Morales E investigator.; Martinez‐Torres A investigator.; Strachan DP investigator.; Pearce N investigator.; Robertson S investigator.; Rutter CE investigator.; Silverwood RJ investigator.; Mallol J investigator.; Soto‐Martinez M investigator.; Singh M investigator.; Singh V investigator.; Awasthi S investigator.; Kabra SK investigator.; Salvi S investigator.; Mérida‐Palacio JV investigator.; González‐Díaz SN investigator.; Eleuterio González José investigator.; Sánchez JF investigator.; Falade A investigator.; Zar HJ investigator.; López‐Silvarrey Varela A investigator.; González Díaz C investigator.; García‐Marcos L investigator.; Nour M investigator.; Dib G investigator.; Huang J‐L investigator.; Chinratanapisit S investigator.; Soto‐Quirós ME investigator.; El Sony A investigator.; Vichyanond P investigator.; Aguilar P investigator.; Soto‐Quirós ME investigator.; Barba S investigator.; Sabir M investigator.; Kumar L investigator.; Singh V investigator.; Sukumaran TU investigator.; Awasthi S investigator.; Sharma SK investigator.; Hanumante NM investigator.; García‐Almaráz R investigator.; Merida‐Palacio JV investigator.; Del‐Río‐Navarro BE investigator.; González‐Díaz SN investigator.; Eleuterio González José investigator.; Linares‐Zapién FJ investigator.; Asher MI investigator.; Sánchez JF investigator.; Zar HJ investigator.; González Díaz C investigator.; García‐Marcos L investigator.; Musa OAA investigator.; Mohammad Y investigator.; Huang J‐L investigator.; Vichyanond P investigator.; Aguirre V investigator.; Baeza‐Bacab M investigator.; El Sony A investigator.; Mohammad S investigator.; Cortéz E investigator.; Soto‐Quirós ME investigator.; Gratziou CH investigator.; Kumar L investigator.; Sukumaran TU investigator.; Chopra K investigator.; Hanumante NM investigator.; Asher MI investigator.; Onadeko BO investigator.; Rubio AD investigator.; García‐Marcos L investigator.; Hsieh K‐H investigator.; Mallol J investigator.; Shah J investigator.;
• Is Part Of: Pediatric allergy and immunology. Volume 33:Issue 1(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-09-21
• Subjects: allergic disease -- conjunctivitis -- prevalence -- rhinitis -- time trend; Allergy in children -- Periodicals; Immunologic diseases in children -- Periodicals; 617
• DOI: 10.1111/pai.13656
• Languages: English
• ISSNs: 0905-6157

Abstract

Abstract: Background: The Global Asthma Network (GAN), by using the International Study of Asthma and Allergies in Childhood (ISAAC) methodology, has updated trends in prevalence of symptoms of childhood allergic diseases, including non‐infective rhinitis and conjunctivitis ('rhinoconjunctivitis'), which is reported here. Methods: Prevalence and severity of rhinoconjunctivitis were assessed by questionnaire among schoolchildren in GAN Phase I and ISAAC Phase I and III surveys 15–23 years apart. Absolute rates of change in prevalence were estimated for each centre and modelled by multi‐level linear regression to compare trends by age group, time period and per capita national income. Results: Twenty‐seven GAN centres in 14 countries surveyed 74, 361 13‐ to 14‐year‐olds ('adolescents') and 45, 434 6‐ to 7‐year‐olds ('children'), with average response proportions of 90% and 79%, respectively. Many centres showed highly significant ( p < .001) changes in prevalence of rhinoconjunctivitis in the past year ('current rhinoconjunctivitis') compared with ISAAC. The direction and magnitude of centre‐level trends varied significantly ( p < .001) both within and between countries. Overall, current rhinoconjunctivitis prevalence decreased slightly from ISAAC Phase III to GAN: −1.32% per 10 years, 95% CI [−2.93%, +0.30%] among adolescents; and −0.44% [−1.29%, +0.42%] among children. Together, these differed significantly ( p < .001) from the upward trend within ISAAC. Among adolescents, centre‐level trends in current rhinoconjunctivitis were highly correlated with those for eczema symptoms (rho = 0.72, p < .0001) but not with centre‐level trends in asthma symptoms (rho = 0.15, p = .48). Among children, these correlations were positive but not significant. Conclusion: Symptoms of non‐infective rhinoconjunctivitis among schoolchildren may no longer be on the increase globally, although trends vary substantially within and between countries.