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Table 1 Review of 200 stays screened as “unjustified” or “sometimes justified” stays

From: Measuring medically unjustified hospitalizations in Switzerland

UNJUSTIFIED STAYS First round Kappa: 0.70 Second round Agreement 0.99
Reviewer 2 Reviewer 2
  ? UN N % ? UN N %
Reviewer 1 Unknown ? 2 12   7.0% 15    7.5%
Unnecessary UN   154 1 77.5%   172   86.0%
Necessary N 1 26 4 15.5% 1 1 11 6.5%
Proportions % 1.5% 96.0% 2.5% 100.0% 8.0% 86.5% 5.5% 100.0%
SOMETIMES JUSTIFIED STAYS First round Kappa: 0.50 Second round   Agreement: 0.98
Reviewer 2 Reviewer 2
  ? UN N % ? UN N %
Reviewer 1 Unknown ? 4 18 7 14.5% 22 2   12.0%
Unnecessary UN 1 113 8 61.0% 1 141   71.0%
Necessary N 5 28 16 24.5%   2 32 17.0%
Proportions % 5.0% 79.5% 15.5% 100.0% 11.5% 72.5% 16.0% 100.0%
  1. Abbreviations: UN unnecessary, N necessary,? = unknown