Table 1. Number of articles published during the years 2013–2015 available through the Web of Knowledge Databases.

Articles are presented per year and sample size.

Year	Total articles	Articles (n > 90)	Articlesa (n ≤ 90)	Articles (no info)
2013	246	176	65	5
2014	285	187	92	6
2015	285	186	87	12
Total	816	549	244	23

Notes.

^aOnly articles with sample size ≤ 90 were used for the analyses.

No info refers to articles that do not provide information about the sample size used for modelling.