Distribution of five poorly performing ACG categories according to age, episodes and cost
| ACG categories (coding and description) | Total | No outliers | Outliers | |||
| Variables | N | Mean | N | Mean | N | Mean |
| 4100: 2-3 Other ADG Combinations, Age 35+ | 28 864 | 26 992 | 1872 | |||
| Age | 60.5 (14.8) | 59.7 (14.6) | 70.9 (12.8) | |||
| Episodes | 3.9 (1.3) | 3.9 (1.2) | 4.5 (1.5) | |||
| Total cost | 776.3 (828.2) | 620.3 (448.7) | 3026.1 (1504.4) | |||
| 0300: Acute Minor, Age 6+ | 26 909 | 25 142 | 1767 | |||
| Age | 33.1 (16.5) | 31.9 (15.4) | 50.5 (22.1) | |||
| Episodes | 1.7 (1.1) | 1.7 (0.9) | 2.5 (1.4) | |||
| Total cost | 169.5 (236.5) | 125.2 (91.7) | 800.0 (554.3) | |||
| 1800: Acute Minor/Acute Major | 9077 | 8538 | 539 | |||
| Age | 32.1 (19.8) | 30.8 (18.5) | 51.6 (27.1) | |||
| Episodes | 3.6 (1.5) | 3.6 (1.4) | 4.8 (2.3) | |||
| Total cost | 353.2 (366.2) | 288.7 (166.5) | 1374.2 (843.8) | |||
| 0400: Acute Major | 8160 | 7503 | 657 | |||
| Age | 38.5 (18.2) | 36.6 (16.7) | 59.9 (20.6) | |||
| Episodes | 1.6 (0.8) | 1.5 (0.7) | 2.1 (1.1) | |||
| Total cost | 237.3 (379.5) | 158.3 (108.7) | 1139.1 (877.8) | |||
| 3900: 2-3 Other ADG Combinations, Males Age 18 to 34 | 5877 | 5523 | 354 | |||
| Age | 28.1 (4.5) | 28.0 (4.5) | 28.7 (4.2) | |||
| Episodes | 3.3 (1.0) | 3.3 (1.1) | 3.8 (1.2) | |||
| Total cost | 341.6 (399.1) | 273.7 (154.1) | 1401.2 (1040.1) | |||
Contrast statistic: χ2 test or Mann–Whitney–Wilcoxon test; p<0.001 in all cases.
ADG, Ambulatory Diagnostic Groups.