Table 2.

Prevalence (%) and odds ratios (95% confidence interval) of insomnia symptoms and insomnia disorder by age groups in men (n = 537) and women (n = 587).

	Insomnia symptoms		Insomnia disorder
	Men	Women	Men	Women
Age groups (yrs)
18–29	16.2 [10.6–24.0]	23.6 [16.5–32.5]	6.8 [3.5–12.9]	9.4 [5.2–16.5]
30–39	17.6 [11.5–26.2]	32.6 [23.7–42.9]	6.9 [3.5–12.9]	13.5 [7.9–22.1]
40–49	18.4 [11.6–27.8]	26.1 [18.8–35.0]	11.5 [6.4–19.9]	21.6 [15.0–30.2]
50–59	15.4 [9.0–25.0]	27.8 [19.6–37.8]	5.1 [2.0–12.5]	13.3 [7.8–21.9]
60–69	21.1 [14.1–30.3]	30.7 [22.5–40.3]	4.2 [1.6–10.3]	12.9 [7.7–20.8]
70–84	31.1 [20.9–43.6]	36.3 [27.1–46.5]	8.2 [3.5–17.8]	9.9 [5.3–17.7]
Total	19.4 [16.2–22.9]	29.3 [25.8–33.1]	7.1 [5.2–9.6]	13.6 [11.1–16.6]