SYMPTOMS OF ILLNESS CHECKLIST
Description
We developed the Symptoms of Illness Checklist (SIC) as a measure of general health to be used in the context of psychological research. The SIC comprises 33 self-report symptoms of illness across the major organ systems.
Symptom frequency is rated on a scale of 1 (1–3 days over the past two months) to 5 (daily).
Symptom severity is rated on a scale of 1 (no interference with daily activities) to 4 (severe interference)
Reliability and Validity
Test-retest after one week: Spearman's r = .90
Test-retest after two weeks: Spearman's r = .75
Cronbach alpha: .86
Intraclass coefficient between self- and physician-ratings: .94
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Downloads
The following SIC files may be downloaded and used for research purposes.
SPSS Error Checking (SPSS code that will check for symptoms where the severity, but not frequency, were marked and vice versa).
Reference
When citing the SIC, please use the following reference:
Stowell, J. R., Hedges, D. W., Ghambaryan, A., Key, C., & Bloch, G. J. (2009). Validation of the Symptoms of Illness Checklist (SIC) as a tool for health psychology research. Journal of Health Psychology, 14(1), 68–77. doi:10.1177/1359105308097947
