Analysis of sleep quality, disease uncertainty, and psychological tolerance in patients undergoing chemotherapy for digestive tract malignancies

Table 5 Correlation between Pittsburgh Sleep Quality Index score and Mishel Uncertainty in Illness Scale for Adults and Connor-Davidson Resilience Scale scores in chemotherapy patients with gastrointestinal malignant tumors

Variables		PSQI
		r	P value
MUIS-A score	Lack of disease information	0.583	< 0.001
	Disease uncertainty	0.422	0.008
	Complexity	0.169	0.114
	Unpredictability	0.426	0.006
CD-RISC score	Resilience	-0.579	< 0.001
	Self-improvement	-0.613	< 0.001
	Optimistic	-0.281	0.021

PSQI: Pittsburgh Sleep Quality Index; MUIS-A: Mishel Uncertainty in Illness Scale for Adults; CD-RISC: Connor-Davidson Resilience Scale.