Fig. 3From: Use of wearable devices for post-discharge monitoring of ICU patients: a feasibility studyCorrelation between mean score on the Richards-Campbell Sleep Questionnaire (RCSQ) and wearable-derived measure of the number of minutes asleep overnight (between 22:00 and 06:00). The Pearson correlation coefficient was 0.33 (95% CI 0.04 - 0.58)Back to article page