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Table 2 Validity of APDC cancer diagnoses compared with the NSW Cancer Registry for selected cancer types, July 2001 to December 2010

From: Identifying incident colorectal and lung cancer cases in health service utilisation databases in Australia: a validation study

Cancer type

Cases in NSWCR

Cases in APDC

PPV

Sensitivity

Specificity

Bladder

523

1253

35%

84%

99.7%

Breast

4172

4376

86%

90%

99.8%

Colorectal

3597

3747

91%

95%

99.9%

Kidney

575

616

85%

91%

100.0%

Lung

1225

1151

86%

81%

100.0%

Melanoma

3748

2459

71%

47%

99.8%

Non-Hodgkin Lymphoma

1003

1080

71%

76%

99.9%

Pancreatic

271

283

81%

84%

100.0%

Prostate

7256

6401

86%

76%

99.7%

Stomach

282

314

78%

87%

100.0%

Unknown primary

306

659

29%

62%

99.8%

Uterine

543

535

93%

92%

100.0%

  1. APDC Admitted Patient Data Collection, NSWCR New South Wales Cancer Registry, PPV Positive predictive value