Fig. 7: Longitudinal data exhibits good reliability. | npj Digital Medicine

Fig. 7: Longitudinal data exhibits good reliability.

From: Smartphone-based symbol-digit modalities test reliably captures brain damage in multiple sclerosis

Fig. 7

a With the learning period included, all longitudinal data has an intraclass correlation coefficient (ICC) of 0.87, which means that data for the same individual tend to cluster highly with each other; therefore, the data has good intra-individual reliability. b Without the learning period included, the ICC value increases to 0.90. In both panel a and b, the written SDMT scores (converted by adding 7.8 points to all app SDMT scores) have differences that span much larger than the current clinically significant change threshold of 4 points.

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