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Table 4 Stratified analysis of the association of PGR polymorphism with breast cancer under dominant model

From: The Alu-insertion progesterone receptor gene polymorphism is not associated with breast cancer: a meta-analysis

Subgroup analysis

Alu insertion

n

OR

95% CI

pz

I2(%)

ph

Overall

10

1.025

0.526–1.994

0.943

89.0

< 0.001

Ethnicity

 Caucasians

6

0.916

0.673–1.246

0.576

35.0

0.174

 African-American

1

 

excluded

   

 Latinos

1

1.712

0.898–3.263

0.102

 Indians

1

0.091

0.033–0.254

< 0.001

 Indo - European mixed race

1

11.620

5.331–25.327

< 0.001

Source of controls

 Population-based

8

1.179

0.515–2.699

0.697

91.1

< 0.001

 Hospital-based

2

0.635

0.385–1.046

0.075

0.0

0.897

  1. Note: n, the number of studies; pz, p value for association test; ph, p value for heterogeneity test