From: Dewidar, O., Kawala, B. A., Antequera, A., Tricco, A. C., Tovey, D., Straus, S., Glover, R., Tufte, J., Magwood, O., Smith, M., Ooi, C. P., Dion, A., Goetghebeur, M., Reveiz, L., Negrini, S., Tugwell, P., Petkovic, J., Welch, V., & COVID-END Equity Task Force (2022). Methodological guidance for incorporating equity when informing rapid-policy and guideline development. Journal of clinical epidemiology, 150, 142–153. https://doi.org/10.1016/j.jclinepi.2022.07.007
Limiting study inclusion to only English language publications for a knowledge synthesis study should be avoided as it may lead to language bias. It is important to include a global range of evidence and this can be done by having a language expert (other than English) on the team to screen studies.