Before revision: Sleep efficacy is often described as the ratio between time spent asleep ("total sleep time (STS)"), and time spent "in bed" ("time in bed (TIB)"), however, TIB does not encompass "non-sleep-related activities" done in bed (e.g.
After revision: Sleep efficacy is often described as the ratio between time spent asleep ("total sleep time (STS)"), and time spent "in bed" ("time in bed (TIB)"), however, TIB does not encompass "non-sleep-related activities" performed in bed (e.g.