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Table 2 Comparison of documentation of treatment and outcome of matched cases, with measurement of agreement

From: Comparing routine administrative data with registry data for assessing quality of hospital care in patients with myocardial infarction using deterministic record linkage

Comparison for matched patients AOK (n = 2305) BMIR (n = 2305) Kappa coefficient Classification according to categories
PCI
(PCI for pts. coded as STEMI in AOK and BMIR)
(PCI for pts. coded as NSTEMI in AOK and BMIR)
82.1 %
94.7 %
71.9 %
82.5 %
94.1 %
72.1 %
0.903
0.885
0.925
I
Hospital mortality 9.2 % 9.2 % 0.979 I
Length of stay in hospital
(median IQR)
6 days
(4/10)
6 days
(4/9)
0.868 I