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Table 1 Factor loadings in each of the items of the symptom inventory on the three factors extracted, after varimax rotation

From: Reliability and predictive validity of a hepatitis-related symptom inventory in HIV-infected individuals referred for Hepatitis C treatment

Symptoms Neuropsychiatric symptoms Somatic symptoms Sleep symptoms
Anxiety 0.52a 0.18 0.32
Cough or nasal congestion 0.24 0.24 0.01
Sadness/depression 0.71a 0.06 0.30
Restlessness 0.52a 0.19 0.42
No interest in activities 0.72a 0.05 0.32
Difficulty making decisions 0.74a 0.14 0.23
Strange thoughts 0.62a -0.14 0.37
All-over sick feeling 0.42 0.63a 0.19
Difficulty getting to sleep 0.22 0.29 0.68a
Difficulty staying asleep 0.25 0.28 0.70a
Sleeping too much 0.45 0.10 -0.25
Nausea 0.38 0.55a 0.12
Vomiting 0.10 0.38 0.26
Loss of appetite 0.41a 0.15 0.10
Tiredness/fatigue 0.55a 0.38 0.15
Distractibility 0.75a 0.33 0.04
Body aches 0.26 0.72a 0.26
Joint pain 0.24 0.63a 0.30
Chest pain 0.14 0.64a 0.12
Other pain 0.09 0.52a 0.27
Episodes of confusion 0.70a 0.31 0.07
Word finding problem 0.59a 0.33 -0.04
Memory problem 0.66a 0.36 0.05
Irritability 0.57a 0.21 0.44
Decreased motivation 0.73a 0.21 0.13
Hallucinations 0.34 -0.01 0.52a
Lack of emotions 0.47 0.12 0.10
Mood swings 0.57a 0.32 0.47
Slowed movements 0.30 0.65a -0.03
Tremor/shakiness 0.16 0.38 0.28
Walking problems 0.14 0.65a 0.33
Vision problems 0.02 0.47 0.04
Bladder problems 0.29 0.36 0.20
Loss of interest in sex 0.47 0.21 0.07
Fever 0.04 0.37 0.18
Headaches 0.50a 0.39 0.21
Nightmares/dreams 0.38 0.43 0.25
Shortness of breath 0.59a 0.47 -0.13
Rash/skin change/itching 0.19 0.68a -0.02
Change in hair -0.001 0.51a 0.29
Dizziness 0.32 0.55a 0.13
  1. a = Item included in final factor structure.