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Rob van Hest Capture-recapture Methods in Surveillance - RePub ...

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Researchers Objective Method Data-source Nobs a Outcome<br />

381 Log-l<strong>in</strong>ear CRC estimated the number of TB<br />

patients at 462 (95%CI 423-536) and underreport<strong>in</strong>g<br />

at 49.1%, 38.7% and 41.3% for data<br />

sources 1, 2 and 3 respectively<br />

1. Mycobacterial laboratory<br />

database<br />

2. Hospital Information database<br />

3. TB Control Service database<br />

Three-source logl<strong>in</strong>ear<br />

CRC model<br />

To estimate the level of under-report<strong>in</strong>g and to<br />

improve the estimates of the <strong>in</strong>cidence of TB<br />

Guernier et<br />

al80 <strong>in</strong> the vic<strong>in</strong>ity of Cayenne, French Guyana,<br />

1996-2003<br />

657 CRC estimated 47 (95% CI: 31-71) unrecorded<br />

cases. Underreport<strong>in</strong>g of the “physician notification<br />

system” was estimated at 21% (95%CI 20%-23%)<br />

1. Physician notification system<br />

2. TB laboratory register<br />

Three-source logl<strong>in</strong>ear<br />

CRC model<br />

To assess the completeness of TB registration,<br />

<strong>in</strong>cidence and underreport<strong>in</strong>g <strong>in</strong> the Piedmont<br />

Baussano et<br />

al (this<br />

3. Hospital records register<br />

Region of Italy <strong>in</strong> 2001<br />

thesis) 81<br />

1499 Observed completeness of TB notification was<br />

86.6%, <strong>in</strong>creas<strong>in</strong>g to 92.7% after adjustment for<br />

possible imperfect record-l<strong>in</strong>kage and false-positive<br />

hospital cases. Log-l<strong>in</strong>ear CRC estimated completeness<br />

of notification at 63.2%, <strong>in</strong>creas<strong>in</strong>g to 86.6%<br />

after adjustment.<br />

1. Mandatory TB notification<br />

system<br />

2. National mycobacteriology<br />

reference laboratory records<br />

3. Hospital admission database<br />

Three-source logl<strong>in</strong>ear<br />

CRC model<br />

To describe a systematic process of recordl<strong>in</strong>kage<br />

and case-validation and to assess the<br />

Van <strong>Hest</strong> et<br />

al (this<br />

completeness of TB notification <strong>in</strong> the<br />

Netherlands <strong>in</strong> 1998<br />

thesis) 82<br />

28768 Observed and estimated annual TB <strong>in</strong>cidence was<br />

6783 and 11 539, 7139 and 11 433, 7355 and 10 742,<br />

and 7401 and 9647 patients between 1999 and 2002.<br />

Annual estimated completeness of notification<br />

between 1999 and 2002 was 48.1%, 51.1%, 59.0%<br />

and 66.5% respectively<br />

1. Mandatory TB notification<br />

system<br />

2. National mycobacteriology<br />

reference laboratory records<br />

3. Hospital admission database<br />

Three-source logl<strong>in</strong>ear<br />

CRC model<br />

To observe and estimate the annual <strong>in</strong>cidence<br />

of TB and to assess the completeness of TB<br />

Van <strong>Hest</strong> et<br />

al (this<br />

registers <strong>in</strong> England, 1999-2002<br />

thesis) 83<br />

a: Nobs = observed number of tuberculosis patients after record-l<strong>in</strong>kage; b: TB = tuberculosis; c: CRC = capture-<strong>recapture</strong>; d: CI = confidence <strong>in</strong>terval; e: HIV = human<br />

immunodeficiency virus; f: PPV = positive predictive value

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