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. Author manuscript; available in PMC: 2014 Sep 8.
Published in final edited form as: Sleep Biol Rhythms. 2010 Jan;8(1):42–51. doi: 10.1111/j.1479-8425.2009.00422.x

Table 1.

Self-reported screening, self-reported sleep diary, and actigraphic measures of sleep

Sleep measure Participant sleep data
Objective age-matched representative values
Screening Sleep diary Actigraphy Actigraphy PSG
TIB (h) 9.47 ± 0.83 9.14 ± 0.68* 9.11 ± 0.72* – –
TST (h) 8.92 ± 0.78 8.59 ± 0.74* 7.35 ± 0.97*,** 6.11*** 6.36***
SOL (min) 13.34 ± 11.00 10.64 ± 7.89 11.04 ± 6.24 15.54*** 17.18***
WASO (min) 13.02 ± 17.39 8.39 ± 7.17 86.40 ± 37.92*,** 78.55 68.17***
SE (%) 94.41 ± 5.26 94.03 ± 3.83 81.40 ± 7.93*,** 79.60 84.80
Daytime napping (min) – 6.50 ± 9.56 16.89 ± 21.66 – –
Insomnia (0–100) – 5.46 ± 5.79 – – –
*

Indicates a significant difference from the respective screening value (P < 0.01).

**

Indicates a significant difference from the respective sleep diary value (P < 0.01).

***

Indicates a significant difference between the sleep measure and its actigraphic or polysomnographic representative value (P < 0.01).

PSG, polysomnography; SE, sleep efficiency; SOL, sleep onset latency; TIB, time in bed; TST, total sleep time; WASO, wakefulness after sleep onset.