Predicting disease risks from highly imbalanced data using random forest

Khalilia, Mohammed; Chakraborty, Sounak; Popescu, Mihail

doi:10.1186/1472-6947-11-51

BMC Medical Informatics and Decision Making

Table 1 HCUP data elements

From: Predicting disease risks from highly imbalanced data using random forest

	Element Name	Element Description
1	AGE	Age in years at admission
2	AGEDAY	Age in days (when age > 1 year)
3	AMONTH	Admission month
4	ASOURCE	Admission source (uniform)
5	ASOURCEUB92	Admission source (UB-92 standard coding)
6	ASOURCE_X	Admission source (as received from source)
7	ATYPE	Admission type
8	AWEEKEND	Admission day is a weekend
9	DIED	Died during hospitalization
10	DISCWT	Weight to discharges in AHA universe
11	DISPUB92	Disposition of patient (UB-92 standard coding)
12	DISPUNIFORM	Disposition of patient (uniform)
13	DQTR	Discharge quarter
14	DRG	DRG in effect on discharge date
15	DRG18	DRG, version 18
16	DRGVER	DRG grouper version used on discharge date
17	DSHOSPID	Data source hospital identifier
18	DX1	Principal diagnosis
19	DX2	Diagnosis 2
20	DX3	Diagnosis 3
21	DX4	Diagnosis 4
22	DX5	Diagnosis 5
23	DX6	Diagnosis 6
24	DX7	Diagnosis 7
25	DX8	Diagnosis 8
26	DX9	Diagnosis 9
27	DX10	Diagnosis 10
28	DX11	Diagnosis 11
29	DX12	Diagnosis 12
30	DX13	Diagnosis 13
31	DX14	Diagnosis 14
32	DX15	Diagnosis 15
*33	DXCCS1	CCS: principal diagnosis
*34	DXCCS2	CCS: diagnosis 2
*35	DXCCS3	CCS: diagnosis 3
*36	DXCCS4	CCS: diagnosis 4
*37	DXCCS5	CCS: diagnosis 5
*38	DXCCS6	CCS: diagnosis 6
*39	DXCCS7	CCS: diagnosis 7
*40	DXCCS8	CCS: diagnosis 8
*41	DXCCS9	CCS: diagnosis 9
*42	DXCCS10	CCS: diagnosis 10
*43	DXCCS11	CCS: diagnosis 11
*44	DXCCS12	CCS: diagnosis 12
*45	DXCCS13	CCS: diagnosis 13
*46	DXCCS14	CCS: diagnosis 14
*47	DXCCS15	CCS: diagnosis 15
48	ECODE1	E code 1
49	ECODE2	E code 2
50	ECODE3	E code 3
51	ECODE4	E code 4
52	ELECTIVE	Elective versus non-elective admission
53	E_CCS1	CCS: E Code 1
54	E_CCS2	CCS: E Code 2
55	E_CCS3	CCS: E Code 3
56	E_CCS4	CCS: E Code 4
57	FEMALE	Indicator of sex
58	HOSPID	HCUP hospital identification number
59	HOSPST	Hospital state postal code
60	KEY	HCUP record identifier
61	LOS	Length of stay (cleaned)
62	LOS_X	Length of stay (as received from source)
63	MDC	MDC in effect on discharge date
64	MDC18	MDC, version 18
65	MDNUM1_R	Physician 1 number (re-identified)
66	MDNUM2_R	Physician 2 number (re-identified)
67	NDX	Number of diagnoses on this record
68	NECODE	Number of E codes on this record
69	NEOMAT	Neonatal and/or maternal DX and/or PR
70	NIS_STRATUM	Stratum used to sample hospital
71	NPR	Number of procedures on this record
72	PAY1	Primary expected payer (uniform)
73	PAY1_X	Primary expected payer (as received from source)
74	PAY2	Secondary expected payer (uniform)
75	PAY2_X	Secondary expected payer (as received from source)
76	PL_UR_CAT4	Patient Location: Urban-Rural 4 Categories
77	PR1	Principal procedure
78	PR2	Procedure 2
79	PR3	Procedure 3
80	PR4	Procedure 4
81	PR5	Procedure 5
82	PR6	Procedure 6
83	PR7	Procedure 7
84	PR8	Procedure 8
85	PR9	Procedure 9
86	PR10	Procedure 10
87	PR11	Procedure 11
88	PR12	Procedure 12
89	PR13	Procedure 13
90	PR14	Procedure 14
91	PR15	Procedure 15
92	PRCCS1	CCS: principal procedure
93	PRCCS2	CCS: procedure 2
94	PRCCS3	CCS: procedure 3
95	PRCCS4	CCS: procedure 4
96	PRCCS5	CCS: procedure 5
97	PRCCS6	CCS: procedure 6
98	PRCCS7	CCS: procedure 7
99	PRCCS8	CCS: procedure 8
100	PRCCS9	CCS: procedure 9
101	PRCCS10	CCS: procedure 10
102	PRCCS11	CCS: procedure 11
103	PRCCS12	CCS: procedure 12
104	PRCCS13	CCS: procedure 13
105	PRCCS14	CCS: procedure 14
106	PRCCS15	CCS: procedure 15
107	PRDAY1	Number of days from admission to PR1
108	PRDAY2	Number of days from admission to PR2
109	PRDAY3	Number of days from admission to PR3
110	PRDAY4	Number of days from admission to PR4
111	PRDAY5	Number of days from admission to PR5
112	PRDAY6	Number of days from admission to PR6
113	PRDAY7	Number of days from admission to PR7
114	PRDAY8	Number of days from admission to PR8
115	PRDAY9	Number of days from admission to PR9
116	PRDAY10	Number of days from admission to PR10
117	PRDAY11	Number of days from admission to PR11
118	PRDAY12	Number of days from admission to PR12
119	PRDAY13	Number of days from admission to PR13
120	PRDAY14	Number of days from admission to PR14
121	PRDAY15	Number of days from admission to PR15
122	RACE	Race (uniform)
123	TOTCHG	Total charges (cleaned)
124	TOTCHG_X	Total charges (as received from source)
125	YEAR	Calendar year
126	ZIPInc_Qrtl	Median household income quartile for patient's ZIP Code

Complete list of 126 HCUP data elements. The elements marked with "*" (rows 33-47) are the ones used in the classification as input variables.
*HCUP data elements used in the classification

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ISSN: 1472-6947

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