Evaluation of sleep quality in patients diagnosed with bipolar disorder and major depression during remission period

doi:10.5498/wjp.v15.i12.112601

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World Journal of Psychiatry

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2220-3206

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Psychiatry. Dec 19, 2025; 15(12): 112601
Published online Dec 19, 2025. doi: 10.5498/wjp.v15.i12.112601

Table 3 Stepwise multivariate regression analysis of factors affecting sleep quality

Variable	β	Significance	95%CI (for β)	VIF
Pittsburgh sleep quality index¹
Constant	8.454	< 0.001	5.509-11.400	N/A
Insomnia severity index	0.535	< 0.001	0.428-0.641	1.192
Global functioning	-0.043	0.017	-0.078 to -0.008	1.192

¹A forward stepwise linear regression analysis was conducted. The final model achieved F (3,132) = 73.179, P < 0.001, with an R² of 0.526 and an adjusted R² of 0.519, variables excluded from the model include work status and body mass index.

CI: Confidence interval; VIF: Variance inflation factor; N/A: Not applicable.

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Citation: Takim U, Gokcay H, Sağlam T. Evaluation of sleep quality in patients diagnosed with bipolar disorder and major depression during remission period. World J Psychiatry 2025; 15(12): 112601
URL: https://www.wjgnet.com/2220-3206/full/v15/i12/112601.htm
DOI: https://dx.doi.org/10.5498/wjp.v15.i12.112601

Takim U, Gokcay H, Sağlam T. Evaluation of sleep quality in patients diagnosed with bipolar disorder and major depression during remission period. World J Psychiatry 2025; 15(12): 112601 [PMID: 41357933 DOI: 10.5498/wjp.v15.i12.112601]

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