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. 2020 Jul 20;17(14):5222. doi: 10.3390/ijerph17145222

Table 2.

Changes in the sleep components analyzed during lockdown. Parametric and nonparametric bivariate analysis.

Pre (N = 207) Post (N = 207) MD CI 95% p
t-Student
p
Wilcoxon
Mean SD Mean SD
COMP 1
Subjective sleep quality
1.03 0.71 1.26 0.84 −0.227 −0.332 −0.122 <0.001 * <0.001 *
COMP 2
Sleep latency
1.03 0.89 1.54 1.06 −0.515 −0.653 −0.376 <0.001 * <0.001 *
COMP 3
Sleep duration
0.87 0.73 0.57 0.71 0.295 0.180 0.410 <0.001 * <0.001 *
COMP 4
Sleep efficiency
0.42 0.76 0.65 0.89 −0.232 −0.364 −0.100 0.001 * 0.001 *
COMP 5
Sleep disturbance
1.03 0.39 1.12 0.43 −0.082 −0.149 −0.015 0.017 * 0.017 *
COMP 6
Use of sleep medication
0.14 0.49 0.16 0.54 −0.029 −0.108 0.050 0.468 0.450
COMP 7
Daytime dysfunction
0.99 0.78 1.11 0.88 −0.121 −0.248 0.007 0.063 0.068
PSQI Global score 5.51 2.89 6.42 3.36 −0.908 −1.307 −0.509 <0.001 * <0.001 *
Percentage sleep efficiency 89.57 11.14 86.19 12.47 3.37 1.49 5.25 <0.001 * 0.001 *
Mean bedtime 00:42 1.05 01:50 1.42 −1.08 −1.25 −0.92 <0.001 * <0.001 *
Mean get-up time 08:01 0.93 10:01 1.42 −2.00 −1.81 −2.19 <0.001 * <0.001 *
Mean time spent in bed 7.59 1.10 8.51 1.15 −0.92 −0.75 −1.09 <0.001 * <0.001 *

MD, mean difference; SD, standard deviation; * Statistically significant differences.