Abnormal Sleep Duration as Predictor for Cardiovascular Diseases: A Systematic Review of Prospective Studies

Table 1

Baseline information of the 10 prospective cohort studies.

No.	Authors	Year of publication	Country	Number of participants	Baseline year	Follow-up (years)	Mean participants’ age (years)	Male percentage (%)	Sleep assessment tool	Outcome assessed
1	Song et al. [37]	2015	China	95,903	2006-2007	Mean 3.98		79.55	Questionnaire	Myocardial infarction
2	Girschik et al. [22]	2016	South Korea	1715	2005-2008	Mean 2.6	53.54	36.68	Questionnaire	Hypertension
3	Mallinson et al. [23]	2016	China	32,137	2006-2007	Mean 3.98		73.41	Questionnaire	Hypertension
4	Yadav et al. [24]	2016	China	874	2011-2012	Mean 2	56.14	25.29	Interview	Hypertension
5	Wang et al. [25]	2016	China	19,370	2008-2010	3 to 5	62.8	30.11	Questionnaire	Coronary heart disease (nonfatal MI, stable angina, unstable angina, unspecified CHD, or CHD death)
6	Song et al. [31]	2016	UK	3723	2003	9	68.13	100	Questionnaire	Heart failure
7	Lao et al. [27]	2017	China	87,693	2006-2007	Median 7.89	50.54	78.65	Questionnaire	Atrial fibrillation
8	Wang et al. [29]	2017	USA	6441	1995-1998	Median 11.4		46.5	Questionnaire	Cardiovascular disease (first event of nonfatal or fatal myocardial infarction, angina pectoris, revascularization procedure, or stroke)
9	Yang et al. [26]	2018	Taiwan	60,586	1996-2014 (for total cohort)	Mean 5.6		46.3	Interview	Coronary heart disease
10	Wannamethee et al. [28]	2020	China	52,599	2006, 2008, 2010	Mean 6.7		76.1	Questionnaire	Cardiovascular events (atrial fibrillation, myocardial infarction, and stroke)