Research Article
Trajectory Modelling to Assess Trends in Long-Term Readmission Rate among Abdominal Aortic Aneurysm Patients
Table 3
Covariates associated with Group 3 (short-term high-impact) as compared to low-impact users among patients who had rAAA repair.
| Risk factors | Low-impact (n (%)) or mean (SD) | Short-term (n (%)) or mean (SD) | OR | CI (95%) | value |
| Patient characteristics | | Age | 73.5 (SD 7.6) | 75.2 (SD 7.5) | 1.02 | 1.02–1.03 | 0.005 | Female sex | 283 (12.5) | 91 (19.4) | 1.48 | 1.26–1.73 | 0.02 | Non-Caucasian ethnicity | 332 (14.6) | 78 (16.6) | 1.13 | 0.96–1.33 | 0.46 | Socioeconomic index | 2.9 (SD 1.3) | 3.2 (SD 1.3) | 1.16 | 1.11–1.22 | 0.001 |
| Past medical history | | Comorbidity score | 4.1 (SD 6.1) | 4.8 (SD 6.9) | 1.02 | 1.00–1.03 | 0.06 | Peripheral vascular disease | 164 (7.2) | 43 (9.1) | 1.16 | 0.92–1.46 | 0.53 | Diabetes | 177 (7.8) | 43 (9.1) | 1.13 | 0.87–1.46 | 0.65 | Hypertension | 1127 (49.7) | 232 (49.4) | 0.94 | 0.83–1.07 | 0.63 | Heart failure | 92 (4.1) | 26 (5.5) | 0.76 | 0.53–1.07 | 0.41 | Ischaemic heart disease | 293 (12.9) | 48 (10.2) | 0.73 | 0.60–0.89 | 0.10 | Mental health disorders | 37 (1.6) | 7 (1.5) | 0.67 | 0.41–1.10 | 0.42 | Stroke | 41 (1.8) | 6 (1.3) | 0.51 | 0.28–0.94 | 0.26 |
| Procedural characteristics | | Other vascular procedures | 394 (17.4) | 97 (20.6) | 1.07 | 0.90–1.29 | 0.69 | Length of stay | 23.7 (SD 21.7) | 26.5 (SD 24.5) | 1.01 | 1.00–1.01 | 0.02 | Other procedures | 340 (13.9) | 58 (12.3) | 0.89 | 0.73–1.08 | 0.54 | Open repair | 2095 (92.4) | 424 (90.2) | 0.78 | 0.61–0.99 | 0.29 | Admission to ITU | 82 (8.9) | 11 (2.3) | 0.71 | 0.49–1.04 | 0.37 |
| Procedure-related complications | | Anaemia | 100 (4.4) | 22 (4.7) | 1.08 | 0.82–1.43 | 0.77 | Graft complications | 73 (3.2) | 15 (3.2) | 0.98 | 0.70–1.38 | 0.95 | Gastrointestinal complications | 233 (10.3) | 42 (8.9) | 0.83 | 0.67–1.02 | 0.38 | Wound complications | 371 (16.4) | 57 (12.1) | 0.71 | 0.59–0.86 | 0.07 | Renal failure | 298 (13.1) | 54 (11.5) | 0.69 | 0.56–0.84 | 0.06 |
| Hospital acquired complications | | Urinary tract infection | 89 (3.9) | 23 (4.9) | 1.38 | 0.98–1.93 | 0.34 | Respiratory tract infection | 544 (23.9) | 119 (25.3) | 1.12 | 0.89–1.41 | 0.62 | Total number of HACs | 0.51 (SD 0.75) | 0.53 (SD 7.9) | 0.95 | 0.82–1.11 | 0.74 | Hypotension | 83 (3.7) | 10 (2.1) | 0.56 | 0.37–0.84 | 0.16 |
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