(a). Characteristics of the studies included for maternal genotype analysis | ||||||||
---|---|---|---|---|---|---|---|---|
Author | Year | Country | Populations | PPROM Excluded? | PTB cases group criteria | Case sample size | Control group criteria | Control sample size |
Women of European descent | ||||||||
Annells et al | 2004 | Australia | White | No | GA<35 | 202 | GA≥37 | 185 |
Hartel et al | 2004 | Germany | White | No | GA<37 and VLBW | 365 | GA≥37 | 281 |
Hollegaard et al | 2008 | Denmark | White | No | GA<37 | 62 | GA≥37 | 55 |
Menon et al | 2005 | TN & PA, USA | White | No | GA<36 | 101 | GA≥37 | 326 |
Simhan et al | 2003 | PA. USA | White | Yes | GA<34 | 39 | GA≥37 | 110 |
Stonek et al | 2008 | Austria | White | No | GA<34 | 21 | GA≥37 | 1367 |
Heterogeneous population | ||||||||
Gomez et al | 2010 | PA, USA | African American, and others | No | GA<37 | 60 | GA≥37 | 636 |
Harper et al | 2011 | USA | White, African American, Asian, and Others | No | GA<28 | 33 | GA≥37 | 549 |
Moura et al | 2009 | Brazil | Mulatto | No | GA<37 | 111 | GA≥37 | 94 |
Moura et al | 2009 | Brazil | Mulatto and White | No | GA<37 | 80 | GA≥37 | 101 |
Simhan et al | 2003 | PA. USA | African American | Yes | GA<34 | 12 | GA≥37 | 46 |
Speer et al | 2006 | IL, USA | White, African American, and Others | No | GA<35 | 79 | GA≥37 | 80 |
(b). Characteristics of the studies included for fetal genotype analysis | ||||||||
Women of European descent | ||||||||
Hartel et al | 2004 | Germany | White | No | GA<37 and VLBW | 606 | GA≥37 | 491 |
Heterogeneous population | ||||||||
Pereyra et al | 2012 | Uruguay | Uruguayan | No | GA<37 | 53 | GA≥37 | 56 |
Speer et al | 2006 | IL, USA | White, African American, and Others | No | GA<35 | 78 | GA≥37 | 78 |
Velez et al | 2007 | TN & PA, USA | African American | Yes | GA<36 | 48 | GA≥37 | 257 |