Outcomes of inpatient cholecystectomy among adults with cystic fibrosis in the United States

Table 1 Comparison of characteristics between subjects with and without cystic fibrosis who underwent cholecystectomy from 2002 to 2014

	Without cystic fibrosis (n = 5974985)		With cystic fibrosis (n = 1239)
	n	%	n	%	P value
Patient and hospital characteristics
Age (mean ± SE)	53.81	0.05	31.28	0.80	< 0.001
Gender					0.342
Male	2113648	35.45	475	38.35
Female	3848224	64.55	764	61.65
Race					< 0.001
White	3377462	68.16	917	90.92
Black	486644	9.82	15	1.51
Hispanic	784975	15.84	38	3.81
Other	306042	6.18	38	3.75
Income quartile					0.669
First	1443591	26.81	270	23.36
Second	1423075	26.43	322	27.83
Third	1342530	24.94	313	27.06
Fourth	1174730	21.82	251	21.76
Primary payer					< 0.001
Medicare	2013023	33.76	255	20.62
Medicaid	689680	11.57	215	17.34
Private insurance	2550634	42.77	646	52.16
Other	710118	11.91	122	9.88
Elixhauser co-morbidity score					0.095
< 3	4425355	74.06	974	78.62
≥ 3	1549630	25.94	265	21.38
Chronic respiratory failure	16136	0.27	24	1.96	< 0.001
Hospital bed size					0.044
Small	744565	12.50	89	7.27
Medium	1569622	26.36	306	24.87
Large	3639976	61.13	835	67.86
Hospital location/teaching status					< 0.001
Rural	786013	13.20	57	4.67
Urban non-teaching	2724014	45.75	252	20.52
Urban teaching	2444135	41.05	920	74.82
Hospital region					0.184
Northeast	1048152	17.54	210	16.93
Midwest	1248121	20.89	335	27.00
South	2369451	39.66	467	37.65
West	1309262	21.91	228	18.42
Cholecystectomy approach					0.003
Laparoscopic	4192051	70.16	973	78.55
Open	1782934	29.84	266	21.45
Indication for cholecystectomy1					< 0.001
Acute cholecystitis	3606140	60.35	597	48.14
Chronic cholecystitis	317489	5.31	98	7.90
Gallstone disease without cholecystitis	1077090	18.03	329	26.58
Biliary dyskinesia	71204	1.19	62	5.03
Other	903063	15.11	153	12.35

¹Hierarchy model.