Table 2.

Risk ratios by transition states

Transition states		Risk Ratio (Range)	Source
Not readmitted	Stable management of COPD	-	-
	Not managing COPD	0.704 (0.634–0.774)	[29]
Readmitted	COPD	0.599 (0.539–0.659)	[28]
	respiratory diseases	0.720 (0.648–0.792)	[28]
	other diseases	0.720 (0.648–0.792)	[28]