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Table 3 Multi-level analysis of the association between admission department and hydration of high-risk patients (n = 561)

From: Guideline adherence for identification and hydration of high-risk hospital patients for contrast-induced nephropathy

  Model 1a Model 2b
Estimate (SE) Estimate (SE)
Fixed effects
Successful hydration (constant) 1.45 (0.45) 1.46 (0.44)
Admission department   
    Internal medicine Reference Reference
    Urology 1.01 (1.15) 1.04 (1.16)
    Cardiology −0.69 (0.40) −0.71 (0.40)
    Surgery 0.77 (0.58) 0.67 (0.58)
    Pulmonology 0.02 (0.84) 0.10 (0.85)
    Gastroenterology −0.64 (0.60) −0.75 (0.60)
    Day admission 0.13 (0.46) 0.16 (0.46)
    No admission/unknown −2.73 (0.43)*** −2.71 (0.43)***
    Other departments 0.36 (0.57) 0.39 (0.58)
Age patient   0.02 (0.01)
Sex patient   −0.28 (0.22)
Random effects   
ICC 33.31 33.38
Hospital level variance 1.64 (0.63)** 1.58 (0.61)**
  1. ICC Intraclass Correlation Coefficient.
  2. aModel 1 included successful hydration + admission department.
  3. bModel 2 included model 1 + patients age and sex.
  4. **P < 0.01, ***P < 0.001.