Table 2 Summary of studies included in meta-analysis
Author, year | Study or database name | Study design | Duration of follow-up | Dialysis vintage | Dialysis type | Sample size | Biochemical parameters with adequate data | Timing of assessment | Model adjustment |
|---|---|---|---|---|---|---|---|---|---|
Block, 2004 [10] | Fresenius Medical Care | Retrospective cohort | 12-18 months (total) | Maintenance | HD | 40,538 | P, Ca | Average of values in first 3 months of study | Multivariate adjusted |
Dukkipati, 2010 [29] | DaVita-NIED | Prospective cohort | 63 months (total) | Maintenance | HD | 748 | PTH | Baseline, drawn prior to dialysis session | Multivariate (MICS) adjusted |
Floege, 2011 [16] | European Fresenius Medical Care | Retrospective cohort | 20.9 months (median) | Incident, 35% Maintenance, 65% | HD | 7,970 | PTH | Average of values in 1st quarter of follow-up | Multivariate, time-dependent adjusted |
Kalantar-Zadeh, 2006 [14] | DaVita | Prospective cohort | 24 months (total) | Maintenance | HD | 58,058 | P, Ca, PTH | Average of values in 1st quarter of follow-up | Multivariate (MICS), time-dependent adjusted |
Rodriguez-Benot, 2005 [24] | Cordoba, Spain | Prospective cohort | 97.6 months (median) | Maintenance | HD | 385 | P | 6-month mean prior to death or end of study period | Multivariate adjusted |
Tangri, 2011 [30] | UKRR | Prospective cohort | 24 months (total) | Incident | HD, 70% PD, 30% | 7,076 | P, Ca, PTH | Average of values during the first year of dialysis | Multivariate adjusted |
Tentori, 2008 [15] | Dialysis Clinic Inc. | Prospective cohort | 16.4 months (median) | Maintenance | HD | 25,588 | PTH* | Baseline | Multivariate adjusted |