Abstract
Objective Illness behaviors (cognitive, affective, and behavioral reactions) among individuals with systemic sclerosis (SSc; scleroderma) are of clinical concern due to relationships between these behaviors and physical and mental quality of life, such as pain and symptoms of depression. Self-report measures with good psychometric properties can aid in the accurate assessment of illness behavior. The Illness Behavior Questionnaire (IBQ) was designed to measure abnormal illness behaviors; however, despite its longstanding use, there is disagreement regarding its subscales. The goal of the present study was to evaluate the validity of the IBQ in a cohort of patients with SSc. Methods Patients with SSc (n = 278) completed the IBQ at enrollment into the Genetics Versus Environment in Scleroderma Outcome Study. Structural validity of previously derived factor solutions was investigated using confirmatory factor analysis. Exploratory factor analysis was utilized to derive SSc-specific subscales. Results None of the previously derived structural models were supported for SSc patients. Exploratory factor analysis supported an SSc-specific factor structure with 5 subscales. Validity analyses suggested that the subscales were generally independent of disease severity, but were correlated with other health outcomes (i.e., fatigue, pain, disability, social support, and mental health). Conclusion The proposed subscales are recommended for use in SSc, and can be utilized to capture illness behavior that may be of clinical concern.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 585-593 |
| Number of pages | 9 |
| Journal | Arthritis Care and Research |
| Volume | 65 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2013 |
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ASJC Scopus subject areas
- Rheumatology
Cite this
Measuring Illness behavior in patients with systemic sclerosis. / Merz, Erin L.; Malcarne, Vanessa L.; Roesch, Scott C.; Sharif, Roozbeh; Harper, Brock E.; Draeger, Hilda T.; Gonzalez, Emilio; Nair, Deepthi K.; McNearney, Terry A.; Assassi, Shervin; Mayes, Maureen D.
In: Arthritis Care and Research, Vol. 65, No. 4, 04.2013, p. 585-593.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measuring Illness behavior in patients with systemic sclerosis
AU - Merz, Erin L.
AU - Malcarne, Vanessa L.
AU - Roesch, Scott C.
AU - Sharif, Roozbeh
AU - Harper, Brock E.
AU - Draeger, Hilda T.
AU - Gonzalez, Emilio
AU - Nair, Deepthi K.
AU - McNearney, Terry A.
AU - Assassi, Shervin
AU - Mayes, Maureen D.
PY - 2013/4
Y1 - 2013/4
N2 - Objective Illness behaviors (cognitive, affective, and behavioral reactions) among individuals with systemic sclerosis (SSc; scleroderma) are of clinical concern due to relationships between these behaviors and physical and mental quality of life, such as pain and symptoms of depression. Self-report measures with good psychometric properties can aid in the accurate assessment of illness behavior. The Illness Behavior Questionnaire (IBQ) was designed to measure abnormal illness behaviors; however, despite its longstanding use, there is disagreement regarding its subscales. The goal of the present study was to evaluate the validity of the IBQ in a cohort of patients with SSc. Methods Patients with SSc (n = 278) completed the IBQ at enrollment into the Genetics Versus Environment in Scleroderma Outcome Study. Structural validity of previously derived factor solutions was investigated using confirmatory factor analysis. Exploratory factor analysis was utilized to derive SSc-specific subscales. Results None of the previously derived structural models were supported for SSc patients. Exploratory factor analysis supported an SSc-specific factor structure with 5 subscales. Validity analyses suggested that the subscales were generally independent of disease severity, but were correlated with other health outcomes (i.e., fatigue, pain, disability, social support, and mental health). Conclusion The proposed subscales are recommended for use in SSc, and can be utilized to capture illness behavior that may be of clinical concern.
AB - Objective Illness behaviors (cognitive, affective, and behavioral reactions) among individuals with systemic sclerosis (SSc; scleroderma) are of clinical concern due to relationships between these behaviors and physical and mental quality of life, such as pain and symptoms of depression. Self-report measures with good psychometric properties can aid in the accurate assessment of illness behavior. The Illness Behavior Questionnaire (IBQ) was designed to measure abnormal illness behaviors; however, despite its longstanding use, there is disagreement regarding its subscales. The goal of the present study was to evaluate the validity of the IBQ in a cohort of patients with SSc. Methods Patients with SSc (n = 278) completed the IBQ at enrollment into the Genetics Versus Environment in Scleroderma Outcome Study. Structural validity of previously derived factor solutions was investigated using confirmatory factor analysis. Exploratory factor analysis was utilized to derive SSc-specific subscales. Results None of the previously derived structural models were supported for SSc patients. Exploratory factor analysis supported an SSc-specific factor structure with 5 subscales. Validity analyses suggested that the subscales were generally independent of disease severity, but were correlated with other health outcomes (i.e., fatigue, pain, disability, social support, and mental health). Conclusion The proposed subscales are recommended for use in SSc, and can be utilized to capture illness behavior that may be of clinical concern.
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U2 - 10.1002/acr.21874
DO - 10.1002/acr.21874
M3 - Article
VL - 65
SP - 585
EP - 593
JO - Arthritis and Rheumatology
JF - Arthritis and Rheumatology
SN - 2326-5191
IS - 4
ER -