The prevalence of otitis media with effusion (OME) and environmental risk factors were investigated in 423 children aged 7 – 12 years at three primary schools in Princes' Islands, Istanbul, Turkey. An ear, nose and throat examination, including tympanometry, was performed in April (end of the school year) and the families completed a questionnaire about potential risk factors. Type B or C2 tympanograms were taken as indicating OME. The overall prevalence of OME was 16%. OME was significantly associated with numbers of episodes of upper respiratory tract infections (URTI) and acute otitis media (AOM) during the previous year, class size and snoring, but not with allergic symptoms, kindergarten years, breast-feeding duration, parental smoking, domestic animals at home, numbers of siblings and family members, type of home heating, parents' educational level or monthly income. Four or more URTIs and two or more AOM episodes in a year, snoring and class size larger than 20 were risk factors for OME.
JungTTHansonBJ: Classification of otitis media and surgical principles. Otolaryngol Clin North Am1999; 32: 369–383.
2.
GatesGAKleinJOLimDJ: Recent advances in otitis media. 1. Definitions, terminology, and classification of otitis media. Ann Otol Rhinol Laryngol Suppl2002; 188: 8–18.
3.
TosM: Epidemiology and natural history of secretory otitis. Am J Otol1984; 5: 459–462.
4.
DalyKAHunterLLLevineSC: Relationships between otitis media sequelae and age. Laryngoscope1998; 108: 1306–1310.
5.
VicenteJTrinidadARamírez-CamachoR: Evolution of middle ear changes after permanent eustachian tube blockage. Arch Otolaryngol Head Neck Surg2007; 133: 587–592.
6.
BennettKEHaggardMP: Accumulation of factors influencing children's middle ear disease: risk factor modelling on a large population cohort. J Epidemiol Community Health1998; 52: 786–793.
7.
SophiaAIsaacRRebekahG: Risk factors for otitis media among preschool, rural Indian children. Int J Pediatr Otorhinolaryngol2010; 74: 677–683.
8.
AhnJHYoonTHPaeKH: Clinical manifestations and risk factors of children receiving triple ventilating tube insertions for treatment of recurrent otitis media with effusion. Pediatrics2006; 117: e1119–e1123.
9.
Fiellau-NikolajsenM: Tympanometry and secretory otitis media. Observations on diagnosis, epidemiology, treatment, and prevention in prospective cohort studies of three-year-old children. Acta Otolaryngol Suppl1983; 394: 1–73.
10.
TakataGSChanLSMorphewT: Evidence assessment of the accuracy of methods of diagnosing middle ear effusion in children with otitis media with effusion. Pediatrics2003; 112: 1379–1387.
11.
RushtonHCTongMCYueV: Prevalence of otitis media with effusion in multicultural schools in Hong Kong. J Laryngol Otol1997; 111: 804–806.
12.
CaylanRBektasDAtalayC: Prevalence and risk factors of otitis media with effusion in Trabzon, a city in northeastern Turkey, with an emphasis on the recommendation of OME screening. Eur Arch Otorhinolaryngol2006; 263: 404–408.
13.
OkurEYildirimIKilicM Akif: Prevalence of otitis media with effusion among primary school children in Kahramanmaras, in Turkey. Int J Pediatr Otorhinolaryngol2004; 68: 557–562.
14.
KelesEKaygusuzIKarlidagT: Prevalence of otitis media with effusion in first and second grade primary school students and its correlation with BCG vaccination. Int J Pediatr Otorhinolaryngol2004; 68: 1069–1074.
15.
GultekinEDevelioğluONYenerM: Prevalence and risk factors for persistent otitis media with effusion in primary school children in Istanbul, Turkey. Auris Nasus Larynx2010; 37: 145–149.
16.
TeeleDWKleinJORosnerB: Epidemiology of otitis media during the first seven years of life in children in Greater Boston: A prospective, cohort study. J Infect Dis1989; 160: 83–94.
17.
ZielhuisGAHeuvelmans-HeinenEWRachGH: Environmental risk factors for otitis media with effusion in preschool children. Scand J Prim Health Care1989; 7: 33–38.
18.
CeylanAGöksuNKemaloğluYK: Impact of Jacobson's (tympanic) nerve sectioning on middle ear functions. Otol Neurotol2007; 28: 341–344.
19.
HergilsLMagnusonB: Morning pressure in the middle ear. Arch Otolaryngol1985; 111: 86–89.
20.
DuncanBEyJHolbergCJ: Exclusive breast-feeding for at least 4 months protects against otitis media. Pediatrics1993; 91: 867–872.
21.
ChantryCJHowardCRAuingerP: Full breastfeeding duration and associated decrease in respiratory tract infection in US children. Pediatrics2006; 117: 425–432.
22.
CollettJPBurtinPGilletJ: Risk of infectious diseases in children attending different types of day-care setting. Epicrèche Research Group. Respiration1994; 61 (suppl 1): 16–19.
23.
Hammarén-MalmiSTarkkanenJMattilaPS: Analysis of risk factors for childhood persistent middle ear effusion. Acta Otolaryngol2005; 125: 1051–1054.
24.
CastagnoLALavinskyL: Otitis media in children: seasonal changes and socioeconomic level. Int J Pediatr Otorhinolaryngol2002; 62: 129–134.
25.
BlakleyBWBlakleyJE: Smoking and middle ear disease: are they related? A review article. Otolaryngol Head Neck Surg1995; 112: 441–446.
