Using linked routinely collected health data to describe prostate cancer treatment in New South Wales, Australia: a validation study

Table 2 Accuracy of administrative data sources for ascertaining type of prostate cancer treatment in NSW 2000-2002 (n = 1857)

	PCOS		APDC				Medicare				Medicare + APDC
Procedure	n	%	n	%	Sensitivity	Specificity	n	%	Sensitivity	Specificity	n	%	Sensitivity	Specificity
Radical prostatectomy	1036	56	942	51	91	100	777	42	75	100	996	54	96	100
Any radiotherapy	578	31	152	8	25	100	114	6	19	100	175	9	29	99
Brachytherapy	120	6	102	5	84	100	99	5	82	100	113	6	93	100
EBRT	530	29	14	1	2	100	21	1	3	100	35	2	5	99
EBRT incl. extra items*	530	29	14	1	2	100	508	27	86	96	515	28	86	96
Any RDT incl. extra items*	578	31	152	8	25	100	523	28	85	98	548	30	89	97
Androgen deprivation therapy	571	31	Not recorded				502	27	76	95
Non-localised cases	179	79	Not recorded				151	67	82	90

* Extra items are non-treatment visits/procedures comprising radiation field setting and radiation dosimetry
PCOS: Prostate Cancer Care and Outcomes Study; APDC: Admitted Patient Data Collection; EBRT: External beam radiation therapy; RDT: radiotherapy

ISSN: 1472-6963