Figure 5From: Substitution of physicians by nurses in primary care: a systematic review and meta-analysis Comparison of individual trial estimates of the effect of physician-nurse substitution on Quality of Life. Legend. A pooled estimate was not possible due to the various scales used, grading scores and measurements. SMD, standard mean difference; SE, standard error; N, total number of patients per group; CI, confidence interval; NLC, Nurse-Led Care; PLC, Physician-Led Care.Back to article page