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Table 1 Comparison of documentation of baseline characteristics 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
Age (mean) 69 yrs. -  
Women 35 % -  
Treatment in hospital with cath lab 96.5 % 96.6 % 0.902 I
STEMI 47.5 % 46.9 % 0.835 I
Diabetes 30.3 % 33.2 % 0.819 I
Hypertension 67.8 % 79.9 % 0.417 IIa
Smoking 14.8 % 39.9 % 0.390 IIa
Hypercholesterolemia 41.8 % 49.5 % 0.341 IIa
Previous stroke 0.9 % 9.7 % 0.103 IIb
Previous MI 3.2 % 24.8 % 0.007 IIb
Previous PCI 1.0 % 25.6 % 0.010 IIb
Atrial fibrillation 15.5 % 11.3 % 0.582 III
CHF 39.3 % 16.7 % 0.209 III
Renal failure 23.8 % 20.8 % 0.618 III
Cardiogenic shock 6.4 % 5.4 % 0.447 III