Confirmatory factor analysis of the Insomnia Severity Index (ISI) and invariance across race: A pooled analysis of MsFLASH data
| Autor: | Kristine E. Ensrud, Giorgos Bakoyannis, Kathrine M. Newton, Hadine Joffe, Janet S. Carpenter, Kevin L. Rand, Susan M. McCurry, Julie L. Otte, Katherine A. Guthrie |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Difficulty Falling Asleep
General Mathematics Ethnic group 030209 endocrinology & metabolism Sample (statistics) Severity of Illness Index Article White People 03 medical and health sciences 0302 clinical medicine Sleep Initiation and Maintenance Disorders Severity of illness medicine Insomnia Humans 030219 obstetrics & reproductive medicine business.industry Applied Mathematics Obstetrics and Gynecology Middle Aged medicine.disease Confirmatory factor analysis Clinical trial Menopause Black or African American Hot Flashes Female medicine.symptom business Factor Analysis Statistical Sleep Clinical psychology |
| Zdroj: | Menopause |
| Popis: | OBJECTIVE: Women's sleep at menopause is widely reported to be problematic. The Insomnia Severity Index is a commonly used tool for quantifying sleep problems in clinical and research settings, but psychometric properties in menopausal women have not been reported. Our study aim was to examine the factor structure of the Insomnia Severity Index in a large and diverse sample of midlife women with hot flashes. METHODS: Baseline data were from 899 women enrolled in one of the three clinical trials using similar entry criteria conducted by the Menopause Strategies Finding Lasting Answers to Symptoms and Health (MsFLASH) research network. We conducted confirmatory factor analyses for the total sample and within strata defined by race/ethnicity (Black and White women). RESULTS: The Insomnia Severity Index had two factors in the total sample. The 2-factor structure was consistent across Black and White women, with the exception of one item “Difficulty falling asleep”. CONCLUSIONS: The Insomnia Severity Index in midlife women with hot flashes is composed of two factors that capture dimensions of the insomnia severity and daytime impact. The instrument is a psychometrically sound scale appropriate for use in research and clinical practice to capture the severity and daytime impact of insomnia symptoms in diverse samples of midlife women with hot flashes. An abbreviated screening of two items could be considered to determine if further evaluation is needed of sleep complaints. |
| Databáze: | OpenAIRE |
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