Table 6.

Correlation between sleep quality, anxiety, and depression among patients with asthma and COPD (N = 390).

Variables		Correlation	p-value
Diagnosis: (asthma and COPD)	PSQI	0.175**	0.001
	Depression	0.006	0.913
	Anxiety	0.034	0.504
PSQI	Depression	0.128*	0.012
	Anxiety	226**	<0.001
Depression	Anxiety	0.374**	<0.001

**Correlation is significant at the 0.01 level (2-tailed), *Correlation is significant at the 0.05 level (2-tailed).