Impact of Diagnosis-Related-Group (DRG) payment on variation in hospitalization expenditure: evidence from China

Table 1 Characteristics of samples

Diseases	Variables		Match Group		Intervention Group
Diseases	Variables		N=	%	N=	%
COPD	Sex	Male	2172	69.64	2160	69.25
	Sex	Female	947	30.36	959	30.75
	Age	18–39	3	0.10	2	0.06
		40–59	329	10.55	340	10.90
		60–79	1966	63.03	1983	63.58
		≥ 80	821	26.32	794	25.46
	CCI	0	1279	41.01	1245	39.92
		1	1300	41.68	1311	42.03
		≥ 2	540	17.31	563	18.05
	Count		3119	100	3119	100
CI	Sex	Male	5538	74.31	5447	73.08
	Sex	Female	1915	25.69	2006	26.92
	Age	18–39	161	2.16	151	2.03
		40–59	2531	33.96	2527	33.91
		60–79	3977	53.36	3994	53.59
		≥ 80	784	10.52	781	10.48
	CCI	0	649	8.71	403	5.41
		1	3062	41.08	3225	43.27
		≥ 2	3742	50.21	3825	51.32
	Count		7453	100	7453	100
AMI	Sex	Male	4461	80.48	4456	80.39
		Female	1082	19.52	1087	19.61
	Age	18–39	130	2.35	162	2.92
		40–59	2450	44.20	2474	44.63
		60–79	2633	47.50	2587	46.67
		≥ 80	330	5.95	320	5.77
	CCI	0	2335	42.13	2293	41.37
		1	2252	40.63	2286	41.24
		≥ 2	956	17.25	964	17.39
	Count		5543	100	5543	100

ISSN: 1472-6963