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Table 3 Evaluation of the agreement between reference and comparison algorithms and detection of their sensitivity. Lombardy, Italy, 2010

From: Can healthcare utilization data reliably capture cases of chronic respiratory diseases? a cross-sectional investigation in Italy

Algorithm

# patients (prevalence %)

Cohen’s Kappa a

Sensitivity b

COPD (patients aged 40 years or older)

 Reference algorithm c

206,732 (3.6%)

-

52.6%

 Permissive algorithm d

545,520 (9.4%)

0.46

72.9%

 Restrictive algorithm d

217,095 (3.8%)

0.75

51.0%

Asthma (patients aged 40 years or younger)

 Reference algorithm c

143,171 (3.3%)

-

38.8%

 Permissive algorithm d

440,130 (10.1%)

0.35

63.4%

 Restrictive algorithm d

142,482 (3.3%)

0.61

30.6%

  1. aAgreement between reference and comparison (permissive and restrictive) algorithms; b Obtained from external validation data; c Please see Table 1 for details on reference algorithm; d Please see Table 2 for details on permissive and restrictive algorithms