Composite CDE: modeling composite relationships between common data elements for representing complex clinical data

Table 2 Numbers of aCDEs and cCDEs extracted from five clinical documents used at five teaching hospitals in Korea

Hospital		Admission Note	Initial Medical Examination Note	Discharge Summary	Emergency Not	Operation Note	Total No. of CDEs	^f No. of Unique CDEs	^g CDE Reuse Rate
A	^a CDE	84	48	70	83	37	322	227	29.5%
	^bcCDE ^c (aCDE)	10 (55)	9 (40)	6 (34)	6 (45)	2 (10)	33 (184)	16 (110)
	^d aCDE	29	8	36	38	27	138	117
	^e cCDE + aCDE	39	17	42	44	29	171	133	24.5%
C	CDE	30	35	20	27	26	138	87	37.0%
	cCDE (aCDE)	2 (14)	3 (20)	2 (11)	3 (15)	1 (5)	11 (65)	5 (35)
	aCDE	16	15	9	12	21	73	52
	cCDE + aCDE	18	18	11	15	22	84	57	33.3%
G	CDE	70	28	44	54	11	207	161	22.2%
	cCDE (aCDE)	4 (23)	3 (17)	2 (11)	2 (17)	1 (5)	12 (73)	7 (50)
	aCDE	47	11	33	37	6	134	111
	cCDE + aCDE	51	14	35	39	7	146	118	18.8%
P	CDE	204	123	46	43	12	428	266	37.9%
	cCDE (aCDE)	7 (177)	4 (99)	3 (34)	3 (39)	0 (0)	15 (349)	7 (177)
	aCDE	27	24	12	4	12	79	89
	cCDE + aCDE	34	28	15	7	12	94	96	36.2%
S	CDE	12	6	9	10	10	47	31	34.0%
	cCDE (aCDE)	1 (3)	0	0	1 (4)	0	2 (7)	1 (4)
	aCDE	9	6	9	6	10	40	27
	cCDE + aCDE	10	6	9	7	10	42	28	31.9%
Total	CDE	400	240	189	217	96	1142	606	53.1%
	Unique CDE	297	162	142	178	57	836	586	29.9%
	cCDE (aCDE)	15 (224)	14 (152)	9 (71)	9 (90)	2 (10)	49 (547)	20 (327)
	aCDE	73	10	71	88	47	289	259
	cCDE + aCDE	88	24	80	97	49	338	279	46.9%

^a No. of CDEs extracted from each clinical document from each hospital
^b No. of cCDEs created for each clinical document
^c No. of aCDEs contained in ^bcCDEs
^d No. of remaining aCDEs that are not contained in any of the cCDEs in each clinical document
^e Total no. of CDEs consisting of ^bcCDEs and ^daCDEs that are not contained in any of the cCDEs in each clinical document
^f No. of unique CDEs across the five clinical documents
^g Reuse ratio of CDEs across the five clinical documents

ISSN: 1472-6947