Table 1.

Study characteristics.

Study characteristics (N= 18)		Count (%)
Year of publication
	2002-2005	2 (11.1%)
	2007	1 (5.6%)
	2012-2013	4 (22.2%)
	2016-2019	4 (22.2%)
	2020	6 (33%)
	2021	1 (5.6%)
Country
	United States	9 (50%)
	Sweden	3 (16.7%)
	England	1 (5.6%)
	Finland	1 (5.6%)
	Australia	1 (5.6%)
	Australia and Canada	1 (5.6%)
	Canada and Taiwan	1 (5.6%)
	Mixed	1 (5.6%)
Research method
	Descriptive cross-sectional survey (quantitative)	8 (44.4%)
	Review	4 (22.2%)
	Interviews (qualitative)	2 (11.1%)
	Newspaper article	2 (11.1%)
	Observational (qualitative)	1 (5.6%)
	Analysis of written letters (qualitative)	1 (5.6%)
Field
	Education	7 (38.9%)
	Psychology	5 (27.7%)
	Environmentalism	3 (16.7%)
	Journalism	2 (11.1%)
	Nursing	1 (5.6%)