Table 4.
Association between diagnosis of acute kidney injury and in-hospital mortality: main analysis and sensitivity analyses
| In-hospital mortality | Odds ratio (95 % CI) of AKI diagnosis for in-hospital mortality | |||
|---|---|---|---|---|
| Hospitalisations with AKI | Hospitalisations without AKI | adjusted by age and sex | adjusted by all the confounding factorsa | |
| Main analysis (N = 7804) | 33.0 % (76/230) | 6.8 % (516/7,574) | 6.72 (4.45-10.15) | 5.52 (3.62-8.42) |
| Sensitivity analysis | ||||
| (i) Excluding patients with no outpatient creatinine measurement (N = 5506) | 31.9 % (60/188) | 7.9 % (420/5318) | 5.83 (3.71 – 9.15) | 4.61 (2.90 – 7.33) |
| (ii) Excluding patients with co-diagnosis of COPD (N = 3882) | 29.7 % (27/91) | 6.4 % (244/3791) | 5.14 (2.59 – 10.21) | 4.24 (2.12 – 8.47) |
| (iii) Hospitalisations limited to pneumonia diagnosis among LRTI (N = 2400) | 43.1 % (66/153) | 17.5 % (392/2247) | 4.13 (2.63 – 6.46) | 3.72 (2.34 – 5.89) |
AKI, acute kidney injury; COPD, chronic obstructive pulmonary disease; CI, confidence interval; LRTI, lower respiratory tract infection
aAll the factors shown in Table 2, in addition to financial year of hospitalisation