SOYSAL, Pinar et al. Relationship between depression and frailty in older adults : a systematic review and meta-analysis, Ageing Research, v. 36, p. 78-87, 2017.; Aim: Depression and frailty are prevalent and burdensome in older age. However, the relationships between these entities are unclear and no quantitative meta- analysis exists. We conducted a systematic review and meta-analysis to investigate the assoc...