Table 4

Pearson's correlation matrix of CDC Symptom Inventory scores and MFI, Chalder Fatigue Scale, and SF-36 subscales (N = 164)

Total score

Short-form

Case definition score

Questionnaires

r

P

r

P

r

P


MFI

General fatigue

.64

< .001

.67

< .001

.63

< .001

Physical fatigue

.60

< .001

.62

< .001

.62

< .001

Reduced activity

.60

< .001

.62

< .001

.57

< .001

Reduced motivation

.53

< .001

.53

< .001

.50

< .001

Mental fatigue

.54

< .001

.56

< .001

.54

< .001

Chalder Fatigue Scale

.74

< .001

.76

< .001

.75

< .001

SF-36

Physical functioning

-.58

< .001

-.56

< .001

-.60

< .001

Role-physical

-.64

< .001

-.56

< .001

-.62

< .001

Bodily pain

-.67

< .001

-.56

< .001

-.68

< .001

General health

-.59

< .001

-.59

< .001

-.60

< .001

Vitality

-.68

< .001

-.69

< .001

-.67

< .001

Social functioning

-.66

< .001

-.62

< .001

-.63

< .001

Role-emotional

-.39

< .001

-.40

< .001

-.37

< .001

Mental health

-.46

< .001

-.48

< .001

-. 41

< .001

CDC Symptom Inventory Scores

Total

.94

< .001

.97

< .001


Short-form

.94

< .001

.95

< .001


Wagner et al. Population Health Metrics 2005 3:8   doi:10.1186/1478-7954-3-8

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