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Table 2 Results of the evaluation of each study according to QUADAS-2

From: The Diagnosis of Metastatic Axillary Lymph Nodes of Breast Cancer By Diffusion Weighted Imaging: a meta-analysis and systematic review

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 Score
Nakai + + + ? + + + + ? ? ? + + + 10
Kamitani + + + ? + + + + ? ? + + + 10
Fornasa + + + + + + + + ? ? ? + + + 11
He + + + ? + + + + + ? ? + + + 11
Luo + + + ? + + + + ? ? ? + + + 10
Chuang + + + ? + + + + + + ? + + + 12
Kim + + + + + + + + ? + ? + + + 12
Schipper + + + + + + + + + ? + + + + 13
Yamaguchi + + + ? + + + + + ? ? + + + 11
Razek + + + + + + + + + ? ? + + + 12
  1. + = no bias; − = potential bias; ? = bias unclear; 1 = representative spectrum?; 2 = selection criteria clearly described?; 3 = acceptable reference standard?; 4 = time interval between MRI and pathology?; 5 = partial verification avoided?; 6 = differential verification avoided?; 7 = incorporation avoided?; 8 = description execution of DW-MRI?; 9 = description execution of pathology?; 10 = pathology results blinded?; 11 = DW-MRI results blinded?; 12 = clinical data available as in practice?; 13 = uninterpretable results reported?; 14 = withdraw explained?