Table 4: Bivariate correlations (Pearson’s ) between socsiodemographic and clinical variables ().

Sociodemographic and clinical variables Total sleep in minutes Number of awakenings Wake time in minutes Wake % of TST Daytime sleep Age 0.15 0.17 0.04 0.04 0.07 Physical functioning (SF-36–PF) 0.01 −0.15 −0.13 −0.13 −0.14 Time since admission (days) 0.02 0.03 0.04 – 0.02 0.19* Sleep quality (PSQI global) −0.19* 0.03 0.25† 0.25† 0.04

, .