Prevalence of Sleep Disorders and Their Impacts on Occupational Performance: A Comparison between Shift Workers and Nonshift Workers

Table 2

Prevalence of different types of sleep disorders in two groups of shift workers and nonshift workers.

		Shift workers	Nonshift workers	𝑃 value
Insomnia	Yes	26 (12.4%)	14 (6.8%)	𝑃=0.02
	No	184 (87.6%)	190 (93.1%)
Sleep quality	Poor sleep quality	43 (20.4%)	21 (10.3%)	𝑃=0.004
	Better sleep quality	167 (79.5%)	183 (89.7%)
ESS	With ESS	21 (10%)	13 (6.4%)	𝑃=0.041
	Without ESS	189 (90%)	191 (93.6%)
RLS	Yes	22 (10.5%)	14 (6.8%)	𝑃>0.05
	No	188 (89.5%)	190 (93.1%)
Sleep apnea	Yes	15 (7.1%)	17 (8.3%)	𝑃>0.05
	No	195 (92.8%)	187 (91.6%)