Table 5.

Model-based^a Prevalence Estimates of Moderate to Severe Sleep-Disordered Breathing With Concomitant Daytime Sleepiness, Wisconsin Sleep Cohort Study, Wisconsin, 1988–2011

Body Mass Indexb by Age, years	Estimated Prevalence of AHIc ≥15 and ESS Score >10
	%d	95% CI
Men
30–49
<25	0.39	0.10, 0.87
25–29.9	1.6	0.74, 2.66
30–39.9	7.7	4.7, 11.3
≥40	35.9	20.2, 56.6
50–70
<25	1.2	0.44, 2.5
25–29.9	3.7	2.3, 5.1
30–39.9	11.5	8.4, 14.8
≥40	28.7	19.7, 38.1
Women
30–49
<25	0.045	0.008, 0.140
25–29.9	0.19	0.048, 0.44
30–39.9	0.95	0.36, 1.9
≥40	6.0	2.8, 10.6
50–70
<25	0.48	0.15, 1.09
25–29.9	1.46	0.77, 2.33
30–39.9	4.7	3.1, 6.6
≥40	13.3	9.1, 18.6

Abbreviations: AHI, apnea-hypopnea index; CI, confidence interval; ESS, Epworth Sleepiness Scale; SE, standard error.

^a Estimated logistic regression model coefficients: intercept = −15.9 (SE, 3.1); β_Sex = −2.2 (SE, 0.5; female = 1, male = 0); β_Age = 2.7 (SE, 1.1; 0–49 years of age = 0, 50–70 years of age = 1); β_BMI = 0.57 (SE, 0.17; <25 = 23.0, 25–29.9 = 27.6, 30–39.9 = 33.9, ≥40 = 45.4); β_BMI2 = −0.005 (SE, 0.002); β_Age×BMI = −0.07 (SE, 0.03); β_Age×Sex = 1.2 (SE, 0.5).

^b Weight (kg)/height (m)².

^c Events/hour.

^d Among 1,520 participants who contributed a total of 4,563 sleep studies.