Table 1

Distribution of readmissions across categories, and proportion subject to non-payment guidance

CategoryNumber (of individuals affected)Average number per yearPercentage (95% CI)Percentage subject to NHS non-payment guidance 2011/2012
A: Potentially preventable
 A1: Probable suboptimal care312 891 (163 924)52 1495.39 (5.37 to 5.41)49.2
 A2: Possible suboptimal care1 426 628 (821 022)237 77124.58 (24.54 to 24.61)11.4
B: Anticipated but unpredictable hospital care
 B1: Ill but stable439 566 (79 240)73 2617.57 (7.55 to 7.59)14.4
 B2: Unstable deterioration311 036 (23 092)51 8395.36 (5.34 to 5.38)8.7
 B3: Non-medical risk factors391 385 (216 813)65 2316.74 (6.72 to 6.76)13.8
C: Preference
 C1: Self-discharge53 718 (32 196)89530.93 (0.92 to 0.93)n/a
 C2: Public holiday*11 684 (n/a)19470.20 (0.20 to 0.20)n/a
D: Artefact
 D1: Planned care16 062 (8005)26770.28 (0.27 to 0.28)22.0
 D2: Defined periodicity*47 787 (n/a)79640.82 (0.82 to 0.83)n/a
E: Accident or coincidence—related to different body system1 101 818 (692 712)183 63618.98 (18.95 to 19.01)20.8
F: Broadly related1 751 368 (1 312 100)291 89530.17 (30.14 to 30.21)17.8
Total (event-specific)5 804 472 (3 349 104)967 41217.3
Total estimated: C1* and D2*59 471 (n/a)99121.02 (1.02 to 1.03)n/a
  • Categories marked * are estimated differences between observed and expected numbers of cases and cannot be linked back to individual patients. Totals are reported separately. Non-payment guidelines specifically exclude cases where the patient self-discharged (category C1).