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. 2016 Jan;39(1):15–23. doi: 10.1179/2045772315Y.0000000059

Table 3 .

Assessment of the quality of case-control studies

Study Selection Comparability Exposure
Lalumiere et al. (2013)25 ★★★ ★ ★★
Gagnon et al. (2003)3 ★★★ ★ ★★
Gagnon et al. (2005)24 ★★★ ★ ★★
Terson de Paleville et al. (2013)23 ★★★ ★ ★★
Wang et al. (2010)20 ★★★ ★ ★★
Liu et al. (2008)21 ★★★ ★ ★★