Prediction nomogram construction
A nomogram incorporating the above seven independent predictive factors was built (Figure 1). The length of the variable axis represents visually the relative contribution of each predictor. Recipient CYP type of AA and low serum albumin contributed the most points to the model if present. The nomogram assigned the probability of switching IS drugs by accumulating the scores of every risk factor detected on the points scale. The bottom scale showed the risk of poor curative effects of those recipients who receive an IS protocol based on TAC by the total score. Higher scores indicated worse prognosis and clinicians may choose CsA instead of TAC for protocol of IS initially.