Table 4 Mortality risk for relatively low biochemical parameter values versus referent values
Study | Reference range | N* | RR for low values vs. referent (95% CI) | Follow-up (months)†|
|---|---|---|---|---|
Phosphorus (mg/dL) | ||||
Block 2004 [10] | 4.0-5.0 | 13,478 | 1.01 (0.95-1.08) | 18 |
Kalantar-Zadeh 2006 [14] | 5.0-6.0 | 34,636 | 0.99 (0.88-1.12) | 24 |
Rodriguez-Benot 2005 [24] | 3.0-5.0 | 170 | 0.41 (0.05-3.26) | 97.6 |
Tangri 2011 [30] | 3.5-5.5 | 4,776 | 1.22 (1.01-1.49) | 24 |
Calcium (mg/dL) | ||||
Block 2004 [10] | 9.0-9.5 | 28,129 | 0.81 (0.77-0.85) | 30 |
Kalantar-Zadeh 2006 [14] | 9.0-9.5 | 37,662 | 0.93 (0.87-0.98) | 24 |
Tangri 2011 [30] | 8.4-9.5 | 3,394 | 1.35 (0.24-7.48) | 24 |
Parathyroid hormone (pg/mL) | ||||
Dukkipati 2010 [29] | 300-600 | 648 | 0.72 (0.52-0.95) | 63 |
Floege 2010 [16] | 150-300 | 2,595 | 1.31 (1.14-1.51) | 20.9 |
Kalantar-Zadeh 2006 [14] | 200-300 | 33,758 | 0.99 (0.94-1.05) | 24 |
Tangri 2011 [30] | 151-300 | 5,071 | 0.84 (0.61-1.16) | 24 |
Tentori 2008 [15] | 100-300 | 17,648 | 1.00 (0.93-1.08) | 18.7 |