Table 1.

Methods and risk of bias analyses in cross-sectional studies.

Authord	Pub. year	Country	Occupation	N	RRb	Age rangec	ROB scorea
Europe
[37] Fuglseth	2015	Norway	Administration	216	54	μ = 46	3
[60] Mikkelsen	2002	Norway	Industrial enterprises	342	49	μ = 41; SD = 11	3
[6] Salanova	2013	Spain	ICT users	1072	nn	18–58	2
[10] Ragu-Nathan	2008	Spain	ICT users	608	89.4	~20–65	2
[53] Beas	2006	Spain	Public sector	496	nn	20–58	2
[41] Eijckelhof	2014	NL	Office worker	93	77.5	nn	2
[47] Fieseler	2014	EU	Industrial enterprises	491	nn	~36–56	2
[70] Koivunen	2013	Finland	Nurses	146	81	~20–60	3
[32] Korpinen	2011	Finland	Different sectors	6121	41	18–65	3
[58] Seppälä	2001	Finland	Different sectors	379	42.4	21–623	2
[16] La Paglia	2008	Italy	Teachers	77	nn	28–61	2
[45] Rangarajan	2005	Belgium	Sales professionals	154	64	nn	3
[15] Bozionelos	2001	UK	Manager	228	nn	μ = 30; SD = 7	2
Asia
[13] Srivastava	2015	Asia/EU	Manager	152	22	~21–60	2
[38] Jena	2015	India	Academician	54	54	~20–60	2
[33] Yun	2012	Korea	Different sectors	1200	40	20–50	3
[35] Koo	2011	Korea	Different sectors	98	98	26–50	2
[50] Leung	2011	Hong Kong	Office worker	612	58.8	μ = 36; SD = 10	3
[8] Shu	2011	China	Different sectors	289	82.6	20–45	3
[7] Wang	2008	China	Different sectors	951	70.4	~20–40	3
[36] Tu	2005	China	Different sectors	437	62.4	~20–40	1
America
[11] Tarafdar	2015	USA	Sales professionals	237	47	26–56	3
[59] Chesley	2014	USA	Civilian labour force	2256	60	μ = 42; SD = 12	3
[29] Hennington	2011	USA	Nurses	71	nn	20–59	2
[30] Brown	2014	Canada	University setting	215	nn	μ = 42; SD = 11	2
[39] Day	2012	Canada	Different sectors	258	85.7	μ = 35; SD = 9	3
[48] Rocha	2003	Brazil	System analysts	553	85	18–56	3
Australia/New Zealand
[31] Goldfinch	2011	New Zealand	Public servant	240	51	μ = 43	2
[57] Lam	2009	Australia	Care giver	784	nn	> 60 years	3

^aROB score: Risk of bias analysis. Scores marked in bold show a high risk of bias; unmarked scores have a medium risk of bias.

^bRR: response rate; nn: not named in the article.

^cμ: mean age; SD: standard deviation, nn: not named in the article.

^dOnly first author is named.