Skip to main content

Table 2 Stratiedanalysis of the relationship between hypothyroidism and breast cancer risk

From: Does hypothyroidism increase the risk of breast cancer: evidence from a meta-analysis

Variable No.of studies OR(95%CI) P Heterogeneity Model used
I2 Ph
Region
 Europe 12 0.93 (0.88–0.99) < 0.001 0 0.877 Fixed
 North America 5 0.86 (0.60–1.11) < 0.001 93.8% 0 Randomed
 Asia 2 1.17 (0.98–1.35) < 0.001 0 0.319 Fixed
Study design
 Case-control 13 0.85 (0.62–1.09) < 0.001 80.4% 0 Randomed
 Cohort 6 0.96 (0.91–1.01) < 0.001 0 0.517 Fixed
Follow-up date
  > 4 7 0.96 (0.91–1.00) < 0.001 0 0.435 Fixed
  ≤ 4 9 0.80 (0.54–1.07) < 0.001 81.0% 0 Randomed