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Table 3 Inter-rater reliability for discharge data

From: Inter-rater reliability of a national acute stroke register

  N Obs.agr. (%)a Kappa (95 % CI) AC1 (95 % CI)
Discharge destination
 Discharge destination 111 74.8 0.69 (0.60–0.79) 0.72 (0.63–0.81)
Drug treatment at discharge
 Aspirin (ASA) 110 73.6 0.51 (0.38–0.64) 0.65 (0.54–0.76)
 ADP receptor antagonist 110 99.1 0.94 (0.83–1.00) 0.99 (0.97–1.00)
 Dipyridamole 110 71.0 0.25 (0.10–0.41) 0.65 (0.53–0.76)
 Warfarin 110 96.4 0.85 (0.70–0.99) 0.96 (0.92–0.99)
 Diuretics 110 88.2 0.60 (0.40–0.80) 0.86 (0.79–0.94)
 ACE-inhibitor 110 99.1 0.96 (0.90–1.00) 0.99 (0.97–1.00)
 A2-receptor blocker 110 93.6 0.75 (0.58–0.93) 0.93 (0.87–0.98)
 Beta blocker 110 94.5 0.87 (0.77–0.97) 0.93 (0.88–0.99)
 Calcium channel blocker 109 96.3 0.83 (0.66–0.99) 0.96 (0.92–0.99)
 Statins 110 96.4 0.93 (0.86–1.00) 0.95 (0.93–1.00)
  1. aObserved agreement calculated as concordant answers divided by N