Prevalence of snoring and symptoms of sleep disordered breathing among primary school pupils in Ilorin, Nigeria


Background/Aim: Snoring is the production of sound from the upper aero-digestive tract during sleep due to turbulent airflow This study is to determine the prevalence, pattern, night and daytime symptoms of snoring among nursery and primary school pupils in Ilorin, Nigeria due to its public health importance. Materials and methods: This cross sectional survey was carried out among nursery /primary school pupils in Ilorin, Kwara state between April and September, 2010.Ten schools were selected randomly from 100 schools sited within the 3LGAs of Ilorin municipality. Also private and public schools with different parental social economic status were selected. The pupils were selected from nursery 2 to primary 6 in each school using the class registers with the aid of a table of random numbers with 1500 children assessed. The parents/guardians were made to fill the questionnaires and same returned with visitations to the schools twice weekly and reminders sent via phone calls. Data were analyzed using EPIINFO 2002 version 2 software. Results: 1500 questionnaires were given out but 909 were completely filled and returned (response rate of 61%.). There were 598(65.8%) non snorers (NSn) and 311(34.2%) snorers (Sn) at different scales with 153 male snorers to 158 female snorers. The ages of the children ranges from 3 to 16 years (mean ! SD, 8.3 ! 4.8 years. The mean age for the Sn was 8.2 and 8.3 for NSn (range 3–6 years). No statistical difference in age, gender or socio-economic status between Sn and NSn. 598(65.8%) were non snorers (NSn) and 311(34.2%) were snorers (Sn) especially in the age groups 3–6 years, 121(38.9%) and above 6 years of age 101(32.7%) and below 3 years were 89(28%). Conclusion: Snoring is an important health problem among the pupils as a significant percentage snores and most of them are between third and sixth year of life.