Table 2.

Research Designs, Samples and Instruments

Reference	Study Design	Sample			Instruments
		Occupation	N	Location	Occupational Stress	Sleep Quality
(Deng et al, 2020)33	Cross-sectional study	Nurse	180	China	Job Stress Questionnaire	Pittsburgh Sleep Quality Index
(Peng et al, 2022)48	Cross-sectional study	Worker	729	China	Generic Job Stress Questionnaire	Pittsburgh Sleep Quality Index
(Song et al, 2017)34	Cross-sectional study	Dentist	231	Korea	Doctor Job Stress Scale	Pittsburgh Sleep Quality Index
(Song & Kim, 2019)9	Cross-sectional study	Dentist	231	Korea	Dentist Job Stress	Pittsburgh Sleep Quality Index
(Rabei et al, 2020)36	Cross-sectional study	Nursing internship student	95	Egypt	Expanded Nursing Stress Scale	Pittsburgh Sleep Quality Index
(Jiang et al, 2016)49	Cross-sectional study	Worker	700	China	Occupational Stress Inventory-Revised questionnaire	Pittsburgh Sleep Quality Index
(Li et al, 2022)30	Cross-sectional study	Oil worker	1142	China	Occupational Stress Inventory	Pittsburgh Sleep Quality Index
(Li et al, 2019)29	Cross-sectional study	Oilfield worker	2116	China	Occupational Stress Inventory Revised Edition	Pittsburgh Sleep Quality Index
(Gao et al, 2018)39	Cross-sectional study	Physician	504	China	Job Stress Survey	Pittsburgh Sleep Quality Index
(Yook, 2019)50	Cross-sectional study	Firefighter	705	Korea	Occupational stress scale	Pittsburgh Sleep Quality Index
(Takaesu et al, 2021)35	Cross-sectional study	Office worker	4645	Japan	Brief Job Stress Questionnaire	Subjective sleep schedule
(Van Laethem et al, 2015)13	Longitudinal study	Employee	877	Dutch	A one-item measure	Jenkins Sleep Scale
(Sousa et al, 2018)41	Cross-sectional study	Professor	24	Brazil	Work Stress Scale	Pittsburgh Sleep Quality Index
(Gu et al, 2019)51	Cross-sectional study	Nurse	2889	China	Nurse Job Stressor Questionnaire	Pittsburgh Sleep Quality Index
(Han et al, 2016)37	Cross-sectional study	Nurse	2033	China	Effort-Reward Imbalance Questionnaire	Pittsburgh Sleep Quality Index
(Jiang et al, 2020)52	Cross-sectional study	Professional from a public institution	812	China	Effort-reward Imbalance Scale	Pittsburgh Sleep Quality Index
(Dong et al, 2022)53	Cross-sectional study	Emergency worker	7688	China	Job Content Questionnaire	Pittsburgh Sleep Quality Index
(Eskildsen et al, 2017)54	Longitudinal study	Patient with prolonged work-related stress	60	Denmark	Perceived Stress Scale	Pittsburgh Sleep Quality Index
(J. Wang et al, 2022)55	Cross-sectional study	Non-manual worker	1700	China	Effort-Reward Imbalance Inventory	Pittsburgh Sleep Quality Index
(Saalwirth & Leipold, 2021)40	Cross-sectional study	Daytime worker	438	German	Trier Inventory for the Assessment of Chronic Stress	Pittsburgh Sleep Quality Index
(Dong et al, 2020)56	Cross-sectional study	Emergency nurse	4856	China	Job Content Questionnaire	Pittsburgh Sleep Quality Index
(D’Ettorre et al, 2020)57	Cross-sectional study	Nurse	658	Italy	Job Content Questionnaire	Bergen Insomnia Scale
						Epworth Sleepiness Scale
(Pereira & Elfering, 2014)58	Longitudinal study	Full-time employee	60	Swiss	A scale of Frese and Zapf	An original scale including sleep-onset latency, sleep efficiency and sleep fragmentation;
						Subjective sleep diaries
(Wu et al, 2023)59	Cross-sectional study	Shift-working nurse	390	China	Chinese Nurses Stressor Scale	Pittsburgh Sleep Quality Index
(Iwasaki et al, 2018)38	Cross-sectional study	Day-shift public servant	243	Japan	Generic Job Stress Questionnaire	Pittsburgh Sleep Quality Index
(Rasdi, 2018)31	Cross-sectional study	Cable manufacturing worker	140	Malaysia	Stress Overload Scale	Pittsburgh Sleep Quality Index
(Xie et al, 2021)32	Cross-sectional study	Courier	2831	China	Work stress scale	“Over the past month, how do you feel your subjective sleep quality has been?”
(Myllyntausta et al, 2019)60	Longitudinal study	Retiree	2053	Finnish	Job Content Questionnaire	An original scale including sleep duration, sleep difficulties, daytime tiredness, and sleep loss
(Kim et al, 2020)61	Cross-sectional study	Study 1: Working adult	1031	Korea	A measure including perceived job insecurity and negative work spillover	Sleep Problems Questionnaire
	Longitudinal study	Study 2: Working adult	152	Korea
(Shimura et al, 2020)26	Cross-sectional study	Employee	5640	Japan	Brief Job Stress Questionnaire	Pittsburgh Sleep Quality Index
(Leitaru et al, 2019)62	Cross-sectional study	Employee	1973	Swedish	General Nordic Questionnaire for Psychosocial and Social factors at work	“How do you rate the overall quality of your sleep?”
(Bilgic et al, 2021)63	Cross-sectional study	Nurse working during the COVID-19 pandemic	316	Turkey	Perceived Stress Scale	Pittsburgh Sleep Quality Index
(Herr et al, 2018)64	Longitudinal study	Male industrial worker	101	German	Stress Reactivity Scale	Parts of the Diagnostic and Statistical Manual of Mental Disorders
(Bernburg et al, 2021)65	Cross-sectional study	Outpatient nurse	166	German	10-item Perceived Stress Scale	Pittsburgh Sleep Quality Index
(Hartley et al, 2014)66	Cross-sectional study	Police officer	356	USA	Spielberger Police Stress Survey	Pittsburgh Sleep Quality Index
(Abbasi et al, 2018)67	Cross-sectional study	Firefighter	118	Iran	HSE questionnaire for occupational stress	Pittsburgh Sleep Quality Index
(Zhang et al, 2016)68	Cross-sectional study	Nursing assistant	650	USA	Work features questionnaire including three physical domains and five psychosocial domains	Modified questionnaire from Pittsburgh Sleep Quality Index