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Table 2 Characteristics and downs & black scores of studies assessing serious striking life events

From: Striking life events associated with primary breast cancer susceptibility in women: a meta-analysis study

Authors/Year

Country

Design

Valable

OR (95% CI)

Chen 1995 [17]

England

Case–control

Severe life events

11.64 (3.10-43.66)

Protheroe 1999 [19]

Australia

Case–control

Severe life events

0.91 (0.47-1.81)

Kruk 2012 [20]

Poland

Case–control

Major life events

5.33 (4.01-8.21)

Helgesson 2003 [21]

Sweden

Prospective

Stressful events

2.1 (1.2-3.7)

Lillberg 2003 [22]

Finland

Prospective

Major life events

1.35 (1.09-1.67)

Michael2009 [23]

America

Prospective

≥4 life events

0.91 (0.77-1.08)

  1. RR relative risk, CI confidence interval.