Summary of data collected between October 2008 and September 2010
| Variable | Inpatients without diabetes | Inpatients with diabetes | P value* | ||
| N | Mean (SD) or N (%) | N | Mean (SD) or N (%) | ||
| Age | 23 599 | 74.70 (11.82) | 5043 | 75.25 (10.35) | 0.002 |
| Charlson Comorbidity Score | 23 599 | 2.27 (2.39) | 5043 | 3.01 (2.49) | <0.001 |
| Length of stay | 23 599 | 6.0 (2.0 to 33.0)† | 5043 | 7.0 (2.0 to 39.0)† | <0.001 |
| Sex (% male) | 23 599 | 10 719 (45.4) | 5043 | 2631 (52.2) | <0.001 |
| Admission type | 23 599 | 5043 | <0.001 | ||
| Elective | 5881 (24.9) | 784 (15.5) | |||
| Non-elective | 17 718 (75.1) | 4259 (84.5) | |||
| Specialty | 23 599 | 5043 | <0.001 | ||
| Surgical | 8710 (36.9) | 1351 (26.8) | |||
| Medical | 14 889 (63.1) | 3692 (73.2) | |||
| Day of admission | 23 599 | 5043 | 0.336 | ||
| Sunday | 2637 (11.2) | 592 (11.7) | |||
| Monday | 3906 (16.6) | 831 (16.5) | |||
| Tuesday | 3897 (16.5) | 780 (15.5) | |||
| Wednesday | 3804 (16.1) | 790 (15.6) | |||
| Thursday | 3316 (14.0) | 745 (14.8) | |||
| Friday | 3545 (15.0) | 750 (14.9) | |||
| Saturday | 2494 (10.6) | 555 (11.0) | |||
| Outcomes | |||||
| Foot ulcer | 23 599 | 119 (0.50) | 5043 | 52 (1.0) | <0.001 |
| Mortality (% died) | 23 599 | 11 065 (47.0) | 5043 | 2769 (54.9) | <0.001 |
*P value for difference between means (t-test), binary variables (χ2 test) and categorical variables (analysis of varianceoVA). Rank-sum test used to compare non-parametrical variables.
†Median (IQR)