Baseline characteristics of all admissions and readmissions in the dataset, N=77 hospitals
| Variable | All admissions | Only readmissions | ||||
| Median | 5th percentile | 95th percentile | Readmission same hospital (99.7% CI) | Readmission other hospitals (without transfer) (99.7% CI) | Significance | |
| Mean age | 55.41 | 50.64 | 59.17 | 59.86 (59.70 to 60.01) | 56.09 (55.58 to 56.60) | * |
| % Women | 50.59 | 47.49 | 53.60 | 46.72 (46.40 to 47.04) | 43.70 (42.69 to 44.72) | * |
| % Admissions that was registered as acute† | 60.18 | 47.57 | 70.49 | 71.62 (71.33 to 71.91) | 68.48 (67.53 to 69.43) | * |
| % Readmissions that was registered as acute† | 74.38 | 66.09 | 81.10 | 75.85 (75.57 to 76.12) | 59.97 (58.97 to 60.97) | * |
| Mean number of comorbidities | 0.47 | 0.28 | 0.67 | 0.76 (0.76 to 0.77) | 0.64 (0.62 to 0.66) | * |
† In the Dutch National Basic Registration of Hospital Care (LBZ), an acute admission is an admission that cannot be postponed because immediate observation, examination and/or treatment within 24 hours is necessary.
* Significant difference of concerning variable between readmission same hospital compared with readmission other hospitals (99.7% CI)