Efficacy of Cognitive-Behavioral Therapy for Insomnia on Sleep Quality, Insomnia, and Depression among Middle-Aged Women

초록

Purpose: The purpose was to evaluate the efficacy of CBT-I on insomnia, sleep quality, depression, and quality of life of middle-aged women. Methods: An experimental study was conducted with 44 middle-aged women between 40 and 65 years who had insomnia or poor sleep quality. Study instruments included the Insomnia Severity Index (ISI), the Pittsburg Sleep Quality Index (PSQI), the Center for Epidemiological Studies Depression Scale (CES-D), menopause-specific quality of life (MENQoL), and sleep self-efficacy scale. Four sessions of individualized CBT-I combined with sleep hygiene group education were offered. Analyses of covariance (ANCOVAs) were conducted to measure efficacy of CBT-I intervention. Results: Women in the experimental group exhibited better scores in sleep latency, insomnia, sleep quality, and sleep self-efficacy than those in the control group (p<.05). Conclusion: The study results indicated that the CBT-I was effective in decreasing insomnia and poor sleep quality, and some of the depressive symptoms of middle-aged women. Thus, as a nonpharmacological treatment options, CBT-I could be offered to women who have been suffering from sleep problems as a safe and cost-effective intervention. Long-term follow-up is needed whether these improvements would be maintained consistently.