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Table 2 Assessment of methodological quality and risk of bias in the included studies

From: Clinical review: Predictive value of neutrophil gelatinase-associated lipocalin for acute kidney injury in intensive care patients

Study Prospective observational study design Clearly described selection criteria Validated diagnostic scale for AKI used Clearly described NGAL measurements Conflict of interests Risk of bias
de Geus et al. [21] Yes Yes Yes Yes Yes Low
Endre et al. [22] Yes Yes Yes Yes Yes Low
Doi et al. [24] Yes Yes Yes Yes No Low
Cruz et al. [25] Yes Yes Yes Yes No Low
Constantin et al. [26] Yes Yes Yes Yes ? Low
MÃ¥rtensson et al. [27] No Yes Yes Yes ? Medium
Metzger et al. [28] No Yes Yes Yes Yes Medium
Siew et al. [29] Yes Yes Yes Yes No Low
Makris et al. [30] Yes Yes Yes Yes ? Low
Kokkoris et al.a [31] Yes Yes Yes Yes No Low
Linko et al.b Yes Yes N/A Yes No Low
  1. aStudy published as abstract only; author contacted to obtain extracted data; bstudy unpublished. AKI, acute kidney injury; NGAL, neutrophil gelatinase-associated lipocalin.