Table 1.

Data extraction of articles related to study skill (time management) and stress

ID	Author (publication year)	Effective factors in academic performance	Measurement method	Type of R	Type of analysis	Location	Type of study
1	Kleijn (1994)	Study habits	SMART	R=0.4	multiple regression analysis	Amsterdam	Prospective
2	Kleijn (1994)	Anxiety	Dutch adaptation of Spielberger test anxiety inventory	R=-0.3	Pearson correlation	Amsterdam	Prospective
3	Kleijn (1994)	Anxiety	Dutch adaptation of Spielberger Test Anxiety Inventory	R=-0.57	Pearson correlation	Amsterdam	Prospective
4	Kleijn (1994)	Anxiety	Dutch adaptation of Spielberger Test Anxiety Inventory	R=-0.32	Pearson correlation	Amsterdam	Prospective
5	West (2011)	Study strategies	Learning and study strategies inventory (LASSI)	Β=0.32	regression	Texas	Correlational
6	West (2011)	Study strategies	Learning and study strategies inventory (LASSI)	Β=0.43	regression	Texas	Correlational
7	Kumar (2014)	Effect of stress	Semi-structured Performa and stress scale	R=0.17	Pearson correlation coefficient	India	Correlational
8	Sohail (2013)	Stress	Researcher-made	R=-0.58	Spearman	Lahore	Correlational
9	Stewart (1999)	Stress	State trait-anxiety inventory	R=-0.16	Pearson	Hong Kong	Prospective longitudinal

SMART=Study management and academic results test