Table 2.
Demographic characteristics of study population, length of stay and readmissions in the intervention hospital
| Intervention | P value | ||
| 2015–2016* | 2016–2017† | ||
| Mean (SD), median (Q1–Q3) or n (%) | Mean (SD), median (Q1–Q3) or n (%) | ||
| n | 53 768 | 57 965 | – |
| Age (years): mean (SD) | 40.4 (27.3) | 39.8 (27.4) | <0.001‡ |
| Sex: female–n (%) | 26 712 (49.7) | 29 235 (50.4) | 0.01§ |
| Length of stay (min): median (Q1– Q3) | 215 (111–361) | 186 (98–340) | <0.001‡ |
| 7-day readmissions: n (%) | 3177 (5.9) | 3642 (6.3) | 0.01§ |
| 30-day readmissions: n (%) | 6105 (11.4) | 7129 (12.3) | <0.001§ |
| Patients admitted to hospital after emergency department: n | 14 795 | 14 864 | – |
| Length of stay (min): median (Q1–Q3) | 316 (181–465) | 333 (187–490) | <0.001‡ |
| Patients not admitted to hospital after emergency department | |||
| n | 38 971 | 43 100 | – |
| Length of stay (min): median (Q1–Q3) | 185 (97–310) | 155 (86–272) | <0.001‡ |
Q1–Q3: IQR
*13/01/2015 to morning of 13/01/2016.
†13/01/2016 afternoon to 13/01/2017.
‡Mann-Whitney U test.
§χ2 test.