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. 2006 Jan 19;4:1. doi: 10.1186/1740-3391-4-1

Table 3.

Changes due to transition into DST among morning and intermediate types

Variable Mean SD P value
Morning types
IS -0.16 0.14 0.1
IV +0.05 0.31 0.5
RA +0.01 0.02 0.9
tau +16.00 17.66 0.1
Intermediate types
IS -0.03 0.08 0.2
IV -0.04 0.15 0.6
RA +0.01 0.02 0.9
tau -1.00 11.66 0.2

Abbreviations: SD = standard deviation, IS = intra-daily stability, IV = intra-daily variability, RA = relative amplitude, tau = circadian period.