Sentence examples for studies were checked from inspiring English sources

Fourth, the reference lists of previous reviews and included studies were checked.

Reference lists of all eligible studies were checked for further relevant studies resulting in the identification of one extra article (Lopez-Jaramillo et al. 2010).

(random$ or meta-analysis or systematic review).tw. 4 or 5 or 6 3 and 7 In addition, reference lists of retrieved studies were checked.

Reference lists of included studies were checked.

Reference lists of included studies were checked for additional studies.

References of included studies were checked for further relevant studies.

Our list of candidate studies was checked by recognised experts on retail crime (see Additional file 1: Appendix 6).

Heterogeneity of the mean difference across studies was checked using the Q-statistic and the degree of heterogeneity was quantified using the I 2 statistic.

Additionally, the bibliography of included studies was checked for other relevant studies.

Heterogeneity assumption in studies was checked with the Q statistic [ 9].

The heterogeneity of the studies was checked by the chi-square test (P ≤0.05).