Table 3

Corrected item to total correlations for the CDC Symptom Inventory DLV Total score, the Symptom Inventory Short Form score and the Symptom Inventory Case Definition score.

Symptom
Corrected item total correlations


Total Score
Short Form
Case Definition


Female
Male
Female
Male
Female
Male

Sore throat
.40
.28


.34
.30
Tender nodes
.42
.24


.37
.22
Diarrhea
.40
.47




Unusual fatigue after exertion
.66
.82
.69
.86
.61
.84
Muscle aches
.48
.63
.44
.57
.59
.67
Joint pain
.38
.50


.43
.52
Feverishness
.35
.27




Chills
.36
.60




Unrefreshing sleep
.69
.83
.75
.87
.61
.82
Sleeping problems
.64
.72
.66
.78


Headaches
.36
.64


.41
.62
Memory problems
.56
.66
.56
.64


Concentration
.66
.86
.68
.89
.57
.78
Nausea
.49
.42




Stomach pain
.45
.47




Sinus problems
.27
.40




Shortness of breath
.38
.41




Sensitivity to light
.40
.60




Depression
.41
.56





Vermeulen Population Health Metrics 2006 4:12   doi:10.1186/1478-7954-4-12