“…Further, clinical trials are usually based on protocol designs that may not represent the clinical practice of the country [14]. Few complete national reports on surgery for otitis media have been published [4,15]. According to Bisset, ventilation tubes in Scotland in 1994 were inserted at a rate of 27.4 in children aged 0Á15 years; the rates for myringotomy, and combinations adenoidectomy and tympanostomy tubes and adenoidectomy and myringotomy were 5.2,14.5 and 9.5, respectively [15].…”