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Table 2 Contingency table statistics used to calculate overall agreement between emergency department and hospital records

From: Measuring care trajectories using health administrative databases: a population-based investigation of transitions from emergency to acute care

ED visits admitted to the acute care hospital in which the ED was located
  Hospital records
Admitted to attached hospital on same day as discharge from ED Not admitted to attached hospital on same day as discharge from ED
ED Records Admitted to acute care in the attached hospital A: True positives
n = 143,633
B: False positives
n = 26,951
Not admitted to acute care in the attached hospital C: False negatives
n = 41,243
D: True negatives
n = 851,034
ED visits transferred to an acute care hospital in a different facility
  Hospital records
Admitted to a different hospital on same day as discharge from ED Not admitted to a different hospital on same day as discharge from ED
ED Records Transferred to an acute care in a different facility A: True positives
n = 6,633
B: False positives
n = 10,318
Not transferred to an acute care in a different facility C: False negatives
n = 12,495
D: True negatives
n = 1,033,415
  1. Notes: ED emergency department