Table 2.

Prevalence of Sleep-Related Parameters in the Employed Survey Respondents

Variables		Number	Percentage or Mean ±SD
Subjective sleep quality	Very good	1216	15.7
	Fairly good	3638	46.9
	Fairly bad	2228	28.7
	Very bad	681	8.8
Sleep latency	0–5 minutes	569	7.3
	5–15 minutes	2114	27.2
	15–30 minutes	2334	30.1
	>30 minutes	2746	35.4
Sleep duration (h)		7763	6.49 (2.03)
Sleep efficiency (%)		7671	85.1 (30.4)
Epworth Sleepiness Scale	Normal	2805	36.1
	Low	3813	49.1
	Moderate	730	9.4
	Severe	415	5.3