Predictors of Sleep Apnea in the Canadian Population

Table 2

Multivariate logistic regression of the association between sleep apnea and independent variables of interest.

Predictors	Diagnosed sleep apnea OR (95% conf. interval)	value
Age
18–44	1.00	—
45–64	1.94 (1.15–3.26)	0.013
≥65	1.94 (1.08–3.51)	0.027
Ethnicity
White	1.00	—
Others (includes Aboriginals)	0.76 (0.37–1.55)	0.453
Smoking status
Nonsmoker	1.00	—
Ex-smoker	1.10 (0.67–1.79)	0.713
Current smoker	1.22 (0.69–2.15)	0.497
Hypertension
No	1.00	—
Yes	1.08 (0.68–1.71)	0.734
Loud snoring
Snoring not louder than talking	1.00	—
Snoring louder than talk	3.11 (1.95–4.96)	<0.001
How often awakened suddenly with gasping or choking
Never	1.00	—
Rarely or sometimes	3.52 (1.92–6.46)	<0.001
Once a week or more	7.92 (3.74–16.74)	<0.001
Nodded or fallen asleep in driving in the past 12 months
No	1.00	—
Yes	2.41 (1.07–5.43)	0.034
Does not drive	0.53 (0.18–1.53)	0.238
Interaction (Geographic location ∗ Sex)
Quebec
Female	1.00	—
Male	0.83 (0.19–3.56)	0.803
Ontario
Female	1.00	—
Male	1.12 (0.34–3.66)	0.856
Prairie area
Female	1.00	—
Male	0.80 (0.16–4.01)	0.791
BC
Female	1.00	—
Male	4.83 (1.20–19.43)	0.03
Interaction (BMI ∗ daily 15 min physical activity)
Overweight (25–30)
No	1.00	—
Yes	0.17 (0.05–0.60)	0.006
Obesity (≥30)
No	1.00	—
Yes	0.14 (0.04–0.49)	0.002