Fig. 1: Weekly call/text counts and weekly mean levels of survey responses on social activity, loneliness, and outgoingness for a bipolar patient followed for two years.
From: Smartphone-based markers of social connectivity in schizophrenia and bipolar disorder
Specifically, levels of loneliness and outgoingness range from 0 (very slightly or not at all), 1 (a little), 2 (moderately), 3 (quite a bit), to 4 (extremely); levels of social interaction range from 0 (almost no interaction), 1 (little interaction more than superficial), 2 (meaningful interaction), 3(interaction with a close member) to 4 (an unusually deep conversation with another person).
