A Pilot Study of Mood Ratings Captured by Mobile Phone Versus Paper-and-Pencil Mood Charts in Bipolar Disorder

Objective: Patient-reported mood charts are frequently used in management of bipolar disorder. Although mood charts have recently been programmed in electronic devices such as mobile phones, little is known about the impact of the method of data capture on the psychometric properties and validity of these data. Methods: In an ongoing pilot study, a sample of outpatients with bipolar disorder were randomized to complete mood charts either on a mobile phone or with standard paper and pencil as part of a 12-week intervention (primary outcomes for the trial await study completion). We compared these conditions across a single item rating of mood state, and we hypothesized that mobile phone-based data capture would produce greater compliance to mood ratings, variability between and within participants, and concurrent validity with blinded clinician-rated affective symptom severity. Results: A total of 56 participants were randomized and 40 participants were included in the analyses. There were no significant d...