Table 2.

mean annual number of new cases and crude incidence rates of obstructive sleep apnea syndrome stratified by gender and age groups

Variables	Average population	New cases	Mean annual number	Crude incidence ratea
Total	609615	823	74.8	12.3
Gender
Males	303407	462	42	13.8
Females	306208	361	32.8	10.7
Age groups (years)
<15	157869	5	0.4	0.3
15-60	396591	498	45.3	11.4
≥60	55155	320	29.1	52.7

a/100 000 population/year