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Table 2 Actigraphic data on sleep and the rest-activity cycles from spring 2006 (before versus after DST transition).

From: Transitions into and out of daylight saving time compromise sleep and the rest-activity cycles

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