We hypothesized that aggregating data from two simple smartphone tests of fine finger movements with differing contributions of specific neurological domains ( strength, cerebellar functions, vision, and reaction time) will allow establishment of secondary outcomes that reflect domain-specific deficit.
This hypothesis was tested by assessing correlations of smartphone-derived outcomes with relevant parts of neurological examination in multiple sclerosis patients. We developed a mobile app consisting of two simple tests: Finger Tapping and Balloon Popping.
The study consisted of 76 multiple sclerosis (MS) patients and 19 healthy volunteers (HV). The balloon popping and finger tapping tests were self-administered by the participants while the 9-hole peg test (9HPT) was administered by an investigator.