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Table 1 Risk of Bias Summary

From: Diet, weight management, physical activity and Ovarian & Breast Cancer Risk in women with BRCA1/2 pathogenic Germline gene variants: systematic review

Cancer Type

Author, Year

Selection Bias

Study Design

Confounders

Blinding

Data Collection Method

Withdrawals & Dropouts

Quality Score

Ovarian Cancer

Gronwald J et al., 2006

Strong

Moderate

Weak

N/A

Weak

N/A

Weak

McGee J et al., 2012

Weak

Moderate

Strong

N/A

Moderate

N/A

Moderate

Qian F et al., 2019

Strong

Moderate

Strong

N/A

Weak

N/A

Moderate

Abbas S et al., 2019

Strong

Moderate

Weak

N/A

Strong

N/A

Moderate

Breast Cancer

Cybulski C et al., 2015

Strong

Moderate

Strong

N/A

Weak

N/A

Moderate

Dennis J et al., 2010

Strong

Moderate

Strong

N/A

Moderate

N/A

Moderate

Dennis J et al., 2011

Strong

Moderate

Strong

N/A

Strong

N/A

Strong

Gronwald J et al., 2006

Strong

Moderate

Weak

N/A

Weak

N/A

Weak

Kim SJ et al., 2019

Strong

Moderate

Strong

N/A

Moderate

N/A

Moderate

King MC et al., 2003

Strong

Moderate

Moderate

N/A

Weak

N/A

Moderate

Ko KP et al., 2013

Strong

Moderate

Strong

N/A

Strong

N/A

Strong

Kotsopoulos J et al., 2005

Moderate

Moderate

Strong

N/A

Moderate

N/A

Moderate

Lammert J et al., 2018

Strong

Moderate

Strong

N/A

Strong

N/A

Strong

Lecarpentier J et al., 2011

Strong

Moderate

Strong

N/A

Moderate

N/A

Moderate

Manders P et al., 2011

Strong

Moderate

Strong

N/A

Weak

N/A

Moderate

McGuire V et al., 2006

Moderate

Moderate

Strong

N/A

Moderate

N/A

Moderate

Moorman PG et al., 2010

Strong

Moderate

Weak

N/A

Moderate

N/A

Moderate

Nkondjock A, Ghadirian P, et al., 2006

Strong

Moderate

Strong

N/A

Moderate

N/A

Moderate

Nkondjock A, Robidoux A et al., 2006

Moderate

Moderate

Strong

N/A

Strong

N/A

Moderate

Nkondjock A et al., 2007

Strong

Moderate

Strong

N/A

Strong

N/A

Strong

Pijpe A et al., 2010

Moderate

Moderate

Strong

N/A

Moderate

N/A

Moderate

Qian F et al., 2019

Strong

Moderate

Strong

N/A

Weak

N/A

Moderate

  1. N/A = Not Applicable due to study design