Methods
We compiled English language articles that reported left ventricular global longitudinal strain (LVGLS) or global circumferential strain (GCS) in patients with confirmed extra-cardiac sarcoidosis versus healthy controls. Studies that exclusively included patients with probable or definite CS were excluded. Continuous data were pooled as a standard mean difference (SMD) between the sarcoidosis group and controls. A random effect model was adopted in all analyses. Heterogeneity was assessed using Q and I2 statistics.