Study on the correlation between insomnia degree and quality of life in psychiatric outpatients in Chifeng city

Table 5 Correlation analysis between the severity of primary insomnia and life quality

Index	PSQI score
	Pearson correlation coefficient	Partial correlation coefficient
Physiological function	R = -0.236, P < 0.001	R = -0.156, P = 0.004
Role physical	R = -0.586, P < 0.001	R = -0.406, P < 0.001
Body pain	R = -0.165, P = 0.002	R = -0.041, P = 0.455
General health	R = -0.560, P < 0.001	R = -0.431, P < 0.001
Vitality	R = -0.342, P < 0.001	R = -0.164, P = 0.002
Social function	R = -0.266, P < 0.001	R = -0.105, P = 0.045
Role emotional	R = -0.478, P < 0.001	R= -0.241, P < 0.001
Mental health	R = -0.246, P < 0.001	R = -0.168, P = 0.002

This table assesses the relationship between insomnia severity Pittsburgh sleep quality index (PSQI score) and short form 36 (SF-36) quality of life scores by Pearson correlation and partial correlation analysis. The results showed that PSQI scores were significantly negatively correlated with several dimensions of the SF-36 (P < 0.001). PSQI: Pittsburgh sleep quality index.