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Comparison of the effects of combinations of immunosuppressive treatments (nonsteroid + prednisone vs prednisone alone) on GFR (any measurement). The treatment effect is expressed as the SMD between the intervention and control arms at the last time point. Abbreviations: CI, confidence interval; Ctrl, control; GFR, glomerular filtration rate; MD, mean difference; SMD, standardized mean difference; Tx, therapy.
