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Table 5.

Sleep-related predictors for adherent and nonadherent participants.

Structure matrix Standardized coefficients
Refreshed in the morning .407 1.336
Sleep quality .356 .013
Number of awakenings −.334 −.726
Difficulty to concentrate? −.333 −.158
Sleepy during the day? −.318 −2.700
Tired during the day? −.206 3.581
ISI −.155 −.223

Note: group membership was predicted with 86.7% accuracy for adherent and 92.9% accuracy for nonadherent participants (p = .006).