Men with sleep disordered breathing showed longer TIB (M = 7.8, SD = 4.2) and lower sleep efficacy (M = 91.0%, SD = 21.2) than their counterparts (TIB M = 7.0, SD = 1.4; sleep efficacy M = 95.3%, SD = 9.5); however, this difference did not reach statistical significance (TIB p = 0.057 for t -test and p = 0.47 for U test; sleep efficacy p = 0.074 for t -test and p = 0.19 for U test).
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Associations of testosterone and cortisol concentrations with sleep quality in Japanese male workers.
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0.0570
0.0570