Table 2

Actigraphic data on sleep and the rest-activity cycles from spring 2006 (before versus after DST transition).

SPRING
Mean/before
95% confidence interval/before
Standard deviation/before
Mean/after
95% confidence interval/after
Standard deviation/after


Sleep efficiency (%)
87.29
83.26 – 91.23
4.82
83.78
76.51 – 91.06
8.70
0.161
Movement and fragmentation index
20.93
15.82 – 26.05
6.12
28.68
18.82 – 38.55
11.80
0.019
Relative amplitude
0.94
0.92 – 0.96
0.03
0.91
0.88 – 0.95
0.05
0.140
Intra-daily stability
0.64
0.53 – 0.76
0.15
0.62
0.49 – 0.75
0.17
0.313
Intra-daily variability
0.92
0.76 – 1.10
0.20
0.84
0.66 – 1.02
0.24
0.354

Lahti et al. BMC Physiology 2008 8:3   doi:10.1186/1472-6793-8-3