. 2011 May 1;34(5):609–617. doi: 10.1093/sleep/34.5.609

Table 4.

Means and standard deviations of percentage of under- or overestimation of subjective sleep variables compared to objective ones among clusters

Sleep Variables	Clusters
Sleep Variables	HPP M (SD)	LPP M (SD)	UP M (SD)
Difference SOL (%)	333.3^a (448.3)	100.8^b (196.8)	166.3^b (313.8)
Difference WASO (%)	71.3 (118.9)	29.5 (159.5)	47.8 (135.6)
Difference TWT (%)	188.6^a (151.8)	104.0^b (123.5)	134.3^a,b (146.7)
Difference TST (%)	−13.8^a (23.7)	0.8^b (20.8)	−5.4^b (15.8)

Means in the same row that do not share the same superscripts differ at Ps < 0.02 according to the REGW multiple range test.

HPP, high probability pattern of insomnia; LPP, low probability pattern of insomnia; UP, unpredictable pattern of insomnia; SOL, sleep onset latency; WASO, wake after sleep onset; TWT, total wake time; TST, total sleep time;

Difference SOL = (SOL(sleep diary) − SOL(PSG) ) / SOL(PSG) × 100.