Table 5.

Distribution of obstructive sleep apnoea (OSA) risk (low, medium and high) among sociodemographics, body weight categories and the habit of napping regularly (mean and SD)

	N	OSA risk (Berlin Questionnaire)
		Low (%)	OR (95% CI)	Medium (%)	OR (95% CI)	High (%)	OR (95% CI)
All participants	2622	1069 (40.8)		1314 (50.1)		239 (9.1)
Sex
Women	1309	575 (43.9)	Ref	629 (48.1)	Ref	105 (8.0)	Ref
Men	1313	494 (37.6)	0.8 (0.7 to 0.9)*	685 (52.2)	1.2 (1.1 to 1.4)*	134 (10.2)	1.3 (0.9 to 1.7)
Activity
Producer	1520	584 (38.4)	Ref	788 (51.8)	Ref	148 (9.7)	Ref
Shopkeeper	1102	485 (44.0)	1.3 (1.1 to 1.5)	526 (47.7)	0.9 (0.7 to 1.0)	91 (8.5)	0.8 (0.6 to 1.1)
Status
Employer	262	75 (28.6)	Ref	142 (54.2)	Ref	45 (0.17)	Ref
Employee	2360	994 (42.1)	1.8 (1.4 to 2.4)*	1172 (49.7)	0.8 (0.6 to 1.1)	194 (0.82)	0.4 (0.3 to 0.6)
Work start
Before 07:00	1397	542 (38.8)	Ref	717 (51.3)	Ref	138 (9.9)	Ref
After 07:00	1225	527 (43.0)	1.2 (1.1 to 1.4)*	597 (48.7)	0.9 (0.8 to 1.1)	101 (8.2)	0.8 (0.6 to 1.1)
Body weight (kg)
<70	1306	677 (51.8)	Ref	584 (44.7)	Ref	45 (3.4)	Ref
70–79	622	253 (40.7)	0.6 (0.5 to 0.8)*	331 (53.2)	1.4 (1.2 to 1.7)*	38 (6.2)	1.8 (1.2 to 2.8)*
80–89	376	107 (28.4)	0.4 (0.3 to 0.5)*	219 (58.2)	1.7 (1.4 to 2.2)*	50 (23.3)	4.3 (2.8 to 6.6)*
90–99	205	31 (15.2)	0.2 (0.1 to 0.3)*	111 (54.1)	1.5 (1.1 to 2.0)	63 (30.7)	12.4 (8.2 to 18.9)*
>100	113	1 (0.8)		69 (61.0)	2.0 (1.3 to 2.9)*	43 (38.6)	17.2 (10.6 to 27.9)*
Nap
Yes	1474	634 (43.1)	Ref	727 (49.3)	Ref	113 (7.6)	Ref
No	1148	435 (37.9)	0.8 (0.7 to 0.9)	587 (51.1)	1.1 (0.9 to 1.3)	126 (10.9)	1.5 (1.1 to 1.9)*

Sleep apnoea risk was assessed subjectively via the Berlin Questionnaire.¹⁶

*Difference vs ref.

Ref, reference.