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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