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Table 2 Sensitivity analysis

From: Effect of interleukin-6 polymorphism on risk of preterm birth within population strata: a meta-analysis

(a). Maternal genotype sensitivity analysis

Study omitted

Overall OR

Subgroup OR

Women of European descent

Annells et al 2004

0.76 [0.57, 1.01]

0.68 [0.48, 0.95]

Hartel et al 2004

0.73 [0.54, 0.98]

0.63 [0.45, 0.90]

Hollegaard et al 2008

0.72 [0.55, 0.94]

0.65 [0.48, 0.88]

Menon et al 2005

0.73 [0.56, 0.96]

0.66 [0.48, 0.90]

Simhan et al 2003

0.81 [0.63, 1.05]

0.76 [0.57, 1.03]

Stonek et al 2008

0.76 [0.59, 0.99]

0.71 [0.53, 0.94]

Heterogeneous population

Gomez et al 2010

0.74 [0.57, 0.95]

1.01 [0.57, 1.78]

Harper et al 2011

0.74 [0.57, 0.96]

1.08 [0.60, 1.96]

Moura et al 2009 -1

0.73 [0.57, 0.95]

1.00 [0.55, 1.83]

Moura et al 2009 -2

0.74 [0.57, 0.96]

1.06 [0.58, 1.93]

Simhan et al 2003

n/a

n/a

Speer EM et al 2006

0.71 [0.54, 0.92]

0.88 [0.43, 1.83]

(b). Fetal genotype sensitivity analysis

Study omitted

Overall OR

Subgroup OR

Women of European descent

Hartel et al 2004

1.45 [0.63, 3.35]

n/a

Heterogeneous population

Pereyra et al 2012

n/a

n/a

Speer et al 2006

0.92 [0.66, 1.28]

1.07 [0.12, 9.39]

Velez et al 2007

0.97 [0.71, 1.33]

1.53 [0.61, 3.83]