OAHI <1 | OAHI ≥1 | OAHI ≥1.5 | OAHI ≥3 | OAHI ≥5 | OAI ≥1 | |||||||
Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls | Boys | Girls | |
Symptoms (%) | n=202 | n=151 | n=194 | n=72 | n=150 | n=47 | n=80 | n=22 | n=52 | n=15 | n=115 | n=37 |
Nocturnal sweating | 50.2 | 33.8 | 43.0 | 22.2 | 40.9 | 21.3 | 40.0 | 18.2 | 38.5 | 20.0 | 37.4 | 21.6 |
Nocturnal oral breathing | 47.5 | 44.4 | 52.6 | 45.8 | 53.3 | 46.8 | 55.0 | 40.9 | 57.7 | 53.3 | 47.8 | 43.2 |
Snoring | 63.4 | 47.0 | 57.2 | 61.1 | 59.3 | 70.2 | 62.5 | 77.3 | 59.6 | 80.0 | 51.3 | 62.2 |
Habitual snoring* | 32.7 | 24.5 | 33.0 | 37.5 | 36.0 | 48.9 | 41.3 | 54.5 | 36.5 | 46.7 | 31.3 | 43.2 |
Difficulty in getting to sleep | 17.0 | 19.6 | 11.0 | 18.3 | 12.9 | 14.9 | 10.0 | 18.2 | 11.5 | 13.3 | 10.6 | 16.2 |
Feeling tired in daytime | 21.3 | 24.5 | 23.3 | 23.9 | 69.3 | 63.8 | 22.8 | 13.6 | 19.6 | 0 | 15.8 | 16.7 |
Restless sleep | 73.7 | 63.6 | 69.0 | 63.9 | 21.5 | 21.3 | 76.6 | 59.1 | 72.5 | 53.3 | 67.3 | 62.2 |
Prone sleep | 35.9 | 28.6 | 38.2 | 26.1 | 38.5 | 26.7 | 40.5 | 27.3 | 36.5 | 33.3 | 37.3 | 22.2 |
Bruxism | 28.7 | 22.5 | 25.4 | 16.9 | 23.0 | 11.9 | 24.3 | 4.8 | 20.8 | 0 | 24.8 | 9.1 |
Nocturnal enuresis | 6.4 | 1.4 | 3.1 | 1.4 | 3.4 | 2.1 | 1.3 | 4.5 | 1.9 | 6.7 | 1.7 | 2.8 |
Sleep talking | 22.4 | 19.3 | 10.8 | 19.1 | 10.3 | 17.8 | 9.3 | 4.5 | 4.0 | 0 | 8.1 | 17.1 |
Nightmares | 10.3 | 13.6 | 10.6 | 16.4 | 8.4 | 13.6 | 7.8 | 14.3 | 9.8 | 7.1 | 6.3 | 11.8 |
Early morning awakening | 2.5 | 6.8 | 3.7 | 4.2 | 3.4 | 2.1 | 1.3 | 0 | 0 | 0 | 2.7 | 2.8 |
Morning dry mouth | 23.9 | 23.9 | 26.0 | 18.3 | 25.4 | 16.2 | 26.4 | 23.5 | 25.0 | 25.0 | 22.5 | 17.9 |
Day napping | 6.0 | 15.6 | 6.2 | 11.3 | 4.7 | 17.4 | 3.8 | 19.0 | 3.8 | 13.3 | 5.3 | 16.7 |
Morning headache | 4.2 | 3.4 | 3.3 | 5.8 | 3.6 | 2.2 | 3.9 | 0 | 4.0 | 0 | 2.7 | 2.8 |
Allergic rhinitis† | 80.2 | 62.9 | 75.0 | 58.3 | 73.8 | 53.2 | 71.3 | 40.9 | 67.3 | 40.0 | 71.1 | 45.9 |
Asthma† | 8.9 | 8.6 | 11.5 | 9.9 | 12.1 | 8.7 | 12.5 | 9.5 | 11.5 | 0 | 10.5 | 5.6 |
A symptom was considered as positive if the parental-reported questionnaire revealed that the symptom had been present for at least one day/night per week in the past 12 months.
↵* Habitual snoring was defined as snoring for at least three nights per week in the past 12 months.
↵† Symptoms of allergic rhinitis and asthma were considered to be positive if the questionnaire revealed the presence of any of these symptoms.
OAHI, obstructive apnoea hypopnoea index; OAI, obstructive apnoea index; OSAS, obstructive sleep apnoea syndrome.