Table 4. Characteristics of patients with statistically significant differences between training and validation samples.
| Variable | All Discharges N=8,189 | Training N=4,950 | Validation N=3,219 | P value |
|---|---|---|---|---|
| Employment, N (%) | 0.009 | |||
| Disabled | 1,365 (16.7) | 850 (17.2) | 515 (16.0) | |
| Employed | 834 (10.2) | 533 (10.8) | 301 (9.4) | |
| Retired | 3,927 (48.1) | 2,439 (49.3) | 1,488 (46.2) | |
| Unemployed | 1,667 (20.4) | 915 (18.5) | 752 (23.4) | |
| Other or unknown | 376 (4.6) | 213 (4.3) | 163 (5.1) | |
| Pre-admission sulfonylurea use, N (%) | 0.033 | |||
| Yes | 1,356 (16.6) | 765 (15.5) | 591 (18.4) | |
| No | 6,813 (83.4) | 4,185 (84.6) | 2,628 (81.6) | |
| Blood transfusion given, N (%) | 0.033 | |||
| Yes | 1,320 (16.2) | 759 (15.3) | 561 (17.4) | |
| No | 8,012 (98.0) | 4,191 (84.7) | 2,658 (82.6) | |
| Hypertension ever, N (%) | 0.019 | |||
| Yes | 6,395 (78.3) | 3,938 (79.6) | 2,457 (76.3) | |
| No | 1,774 (21.7) | 1,012 (20.4) | 762 (23.7) |