1. Health ABC: Mortality risk by quintile of cystatin C
Mortality rate (%/year)
Hazard ratio (95% CI)
Quintile 1 (lowest cystatin C)
1.7
1.0 (referent)
Quintile 2
2.7
1.74 (1.21–2.50)
Quintile 3
2.9
1.51 (1.05–2.18)
Quintile 4
3.1
1.49 (1.04–2.13)
Quintile 5 (highest cystatin C)
5.4
2.18 (1.53–3.10)
Shlipak MG et al. J Am Soc Nephrol; published online before print November 2, 2005.

2. Health ABC: Mortality risk by quintile of serum creatinine
Hazard ratio (95% CI)
Quintile 1 (lowest serum creatinine)
1.0 (referent)
Quintile 2
1.00 (0.72–1.39)
Quintile 3
0.95 (0.68–1.32)
Quintile 4
1.11 (0.79–1.57)
Quintile 5 (highest serum creatinine)
1.16 (0.86–1.58)
Shlipak MG et al. J Am Soc Nephrol; published online before print November 2, 2005.