Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children: the International Study of Asthma and Allergies in Childhood (ISAAC)

Strachan, David; Sibbald, Bonnie; Weiland, Stephan; Ait‐Khaled, Nadia; Anabwani, Gabriel; Anderson, H. Ross; Asher, M. Innes; Beasley, Richard; Bjorksten, Bengt; Burr, Michael; Clayton, Tadd; Crane, Julian; Ellwood, Philippa; Keil, Ulrich; Lai, Christopher; Mallol, Javier; Martinez, Fernando; Mitchell, Edwin; Montefort, Stephen; Pearce, Neil; Robertson, Colin; Shah, Jayant; Stewart, Alistair; von Mutius, Erika; Williams, Hywel

doi:10.1111/j.1399-3038.1997.tb00156.x

Worldwide variations in prevalence of symptoms of allergic rhinoconjunctivitis in children: the International Study of Asthma and Allergies in Childhood (ISAAC)

Background: As part of the International Study of Asthma and Allergies in Childhood (ISAAC), prevalence surveys were conducted among representative samples of school children from locations in Europe, Asia, Africa, Australasia, North and South America. Subjects: 257,800 children aged 6‐7 years fr…