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Table 2 Overview of included studies for systematic review

From: The usefulness of routine histopathology of bilateral nasal polyps – a systematic review, meta-analysis, and cost evaluation

Study: Study design: Time period: Male to female ratio: Total number of bilateral specimens: Number in agreement (percentage): Number not in agreement (percentage): Number not in agreement – benign (percentage): Number not in agreement – malignant (percentage):
Yeh et al. 2014 Prospective chart review 2007–2013 N/A 866 862 (99.54 %) 4 (0.46 %) 4 (0.46 %) 0 (0 %)
Yaman et al. 2011 Retrospective chart review 2005–2010 N/A 85 85 (100 %) 0 (0 %) N/A N/A
Arslan et al. 2010 Retrospective chart review 2000–2009 N/A 197 197 (100 %) 0 (0 %) N/A N/A
Romashko et al. 2005 Retrospective chart review 1986–2003 N/A 277 277 (0 %) 0 (0 %) N/A N/A
Busaba et al. 2005 Retrospective chart review N/A N/A 200 191 (95.5 %) 9 (4.5 %) 7 (3.5 %) 2 (1 %)
Garavello et al. 2005 Retrospective chart review 1991–2004 1244:903 2147 2139 (99.62 %) 8 (0.37 %) 7 (0.33 %) 1 (0.05 %)
  1. N/A not available