Table 5.

Mean of the scores of rationality evaluation of antibiotics and DID results in two wards.

	Hepatobiliary surgery ward				Respiratory ward
Scores	pre-intervention	post-intervention	diff	P	pre-intervention	post-intervention	diff	P
Intervention group	0.195	0.050	−0.145	< 0.001	0.316	0.033	−0.283	< 0.001
Control group	0.211	0.218	0.007		0.209	0.196	−0.013
Regression–based DID			−0.152	< 0.001			−0.270	< 0.001
RSE			0.148				0.205
Adj-R2			0.192				0.186