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Table 2 The relationship between insomnia, depression and anxiety symptoms levels, and QOL

From: Effects of insomnia and levels of depression and anxiety symptoms on quality of life in people with epilepsy

Variables Insomnia Depression symptom levels Anxiety symptom levels QOL
Insomnia 1    
Depression symptom levels r = 0.48, p < 0.001 1   
Anxiety symptom levels r = 0.52, p < 0.001 r = 0.64, p < 0.001 1  
QOL r = —0.59, p < 0.001 r = —0.61, p < 0.001 r = —0.64, p < 0.001 1
  1. Insomnia = ISI score; Depression symptom levels = NDDI-E score; Anxiety symptom levels = GAD-7 score; QOL = QOLIE-31 score
  2. QOL Quality of life