Table 3.

QUIPS risk of bias assessment

Study	Study participation	Study attrition	Outcome measurement	Statistical analysis and presentation
Alarcon et al. [13]	Low	High	Low	Low
Bisson et al. [23]	Moderate	High	Low	NA
Boccelari et al. [14]	Moderate	High	Moderate	Low
Cunningham et al. [15]	Low	High	Moderate	Low
Elklit et al. [26]	High	High	Low	Low
Fein et al. [16]	Low	Moderate	Moderate	Low
Hunt et al. [20]	Low	Moderate	Low	Low
Johansen et al. [27]	Low	High	Moderate	Low
Johansen et al. [28]	Low	High	Moderate	Low
Kleim et al. [24]	Low	High	Low	Low
McCart et al. [17]	Moderate	High	Low	Low
Pailler et al. [18]	Low	Low	Low	Low
Purtle et al. [19]	Low	High	Low	Low
Roy-Byrne et al. [22]	Low	High	Low	Low
Sullivan et al. [21]	Low	High	Low	Low
Walters et al. [25]	Low	High	Low	Low

NA not applicable