Using administrative health data to describe colorectal and lung cancer care in New South Wales, Australia: a validation study

Table 2 Diagnostic and treatment procedures recorded in the NSW Colorectal Cancer Care Survey and the APDC (n=2917)

	Colorectal cancer survey		APDC		Sensitivity^a	Specificity^a
	n	%	n	%	%	%
Diagnostic investigations	2817	97	2592	89	89	23
Bowel visualisation	2612	90	2425	83	87	52
Colonoscopy	2314	79	2396	82	91	53
Other^b	768	26	142	5	9	97
Imaging for distant metastases	2125	73	792	27	28	74
Abdomino-pelvic CT scan	1501	51	708	24	28	80
Any abdomino-pelvic scan	1624	56	748	26	29	79
Any chest scan	1519	52	176	6	5	93
Bone scan	20	1	44	2	10	99
Resection of primary cancer	2764	95	2654	91	96	92
Colon resection	1393	48	1453	50	94	90
Rectal resection	1401	48	1240	43	85	96
Total proctocolectomy	16	1	45	2	63	99
Other surgical resections
Liver resection	17	1	97	3	65	97
Oophorectomy	71	2	76	3	65	99
Other treatment
Chemotherapy	1027	35	472	16	40	97
Radiotherapy for rectal cancer^c	312	25	66	5	15	98

APDC: Admitted Patient Data Collection.
^a Sensitivity and specificity of the APDC compared with the colorectal cancer survey.
^b Includes barium enema, sigmoidoscopy and endorectal ultrasound.
^c 1226 rectal cancer cases.

ISSN: 1472-6963