Table 2

Prevalence of obstructive sleep apnoea in various epidemiological studies

First author [ref.no.] (country)Population SubjectsAge yrsCriteriaPrevalence %
Lavie 9 (Israel)1262 M18–67AI >10, symptomatic1.0–5.9
Telakivi 10 (Finland)1939 M30–69Snoring, EDS and RDI >100.4–1.4
Gislason 11 (Sweden)3201 M30–69Snoring, EDS and AHI >100.7–1.9
Cirignotta 12 (Italy)1170 M30–39AI >10, symptomatic0.2–1.0
40–59AI >10, symptomatic3.4–5.0
60–69AI >10, symptomatic0.5–1.1
Stradling 13 (1991)893 men35–65ODI4 >20, symptomatic0.3
ODI4 >101.0
ODI4 >54.6
Young 8 (USA)352 M30–60Hypersomnia and RDI >54.0 (M)
250 F30–602.0 (F)
Gislason 14 (Iceland)2016 F40–59Habitual snoring, EDS and verification of OSAS in PSG>2.5
Olson 151233 M35–69AHI >154–18
(Australia)969 FAHI >107–35
AHI >514–69
Bearpark 16294 M40–65RDI >1010.0
(Australia)Subjective EDS and RDI >53.0
Gislason 17 (Iceland)555 Children6 months–6 yrsHabitual snoring or apneic episodes, and ODI4 >3>2.9
Ohayon 18 (UK)2078 M15–100N/A2.4–4.6
2894 F15–100N/A0.8–2.2
Kripke 19 (USA)165 M40–64ODI4 >205.4–13.2
190 F40–64ODI4 >202.1–8.3
Bixler 20 (USA)4364 M20–100AHI >10 and clinical criteria fulfilled with daytime symptoms3.3
Subsample: 74145–64 yrs: 4.7
Duran 21 (Spain)1050 M30–70AHI ≥1019
1098 F15
  • AI: apnoea index

  • EDS: excessive daytime sleepiness

  • RDI: respiratory disturbance index

  • AHI: apnoea/hypopnoea index

  • ODI4: oxygen desaturations >4% per hour

  • OSAS: obstructive sleep apnoea syndrome

  • PSG: polysomnography

  • N/A: not applicable

  • M: male

  • F: female