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Table 2 Associations between misperception of sleep and demographic and clinical variables

From: Misperception of sleep in bipolar disorder: an exploratory study using questionnaire versus actigraphy

Continuous variables TST misperception SL misperception SE misperception
Rho P Rho P Rho P
Age .160 .025 .143 .046 .056 .433
MADRS .142 .047 .189 .008 .160 .025
YMRS .019 .792 .103 .152 .063 .379
Daily coffee intake .025 .733 .000 .999 .045 .531
Daily alcohol intake −.078 .275 −.161 .024 .089 .216
Daily cigarette intake −.009 .902 −.016 .828 .021 .773
Categorical variables p value (t-test) p-value (t-test) p-value (t-test)
Sex .067 .214 .497
OSA risk .001 .215 .420
  1. MADRS Montgomery and Asberg Depression Rating Scale, YMRS Young’s Mania Rating Scale, OSA risk any positive score related to obstructive sleep apnea on The Berlin Questionnaire, TST total sleep time, SL sleep latency, SE sleep efficiency