Table 1.
Characteristics of included studies
| Author | Year of the cohort | Design of the study | Population | Sample size (n) | Follow‐up | Hb variability parameters | HR |
|---|---|---|---|---|---|---|---|
| Weinhandl (2011) | 2006 | Retrospective cohort study | Prevalent haemodialysis patients | 133 246 | 1 year | Residual SD (per 1 g/dL increase) | 1.02 (95% CI = 0.99–1.05) |
| Weinhandl (2011 p) | 1996 | Retrospective cohort study | Prevalent haemodialysis patients | 78 602 | 1 year | Residual SD (per 1 g/dL increase) | 1.07 (95% CI = 1.03–1.12) |
| Weinhandl (2011 i) | 2006 | Retrospective cohort study | Incident haemodialysis patients | 24 999 | 1 year | Residual SD (per 1 g/dL increase) | 1.01 (95% CI = 0.95–1.06) |
| Brunelli (2008) | 2004 | Retrospective cohort study | Incident haemodialysis patients | 6644 | 3082 patient‐years | Residual SD (per 1 g/dL increase) | 1.11 (95% CI = 0.92–1.33) |
| Yang (12) | 1996 | Retrospective cohort study | Incident and prevalent haemodialysis patients | 19 150 | 527 967 patient‐months | Residual SD (per 1 g/dL increase) | 1.33 (95% CI = 1.22–1.45) |
Hb, haemoglobin; HR, hazard ratio; SD, standard deviation.