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. Author manuscript; available in PMC: 2008 Nov 1.
Published in final edited form as: Am J Obstet Gynecol. 2007 Nov;197(5):486.e1–486.10. doi: 10.1016/j.ajog.2007.04.019

Table I.

Observational studies included in meta-analysis

Author/Reference # Year Study Group Control Group N GA Antenatal steroid Recent AI Exposure
Neibyl22 1986 AI* None 135 <35 wks, Matched No data No data
Baerts37 1990 AI+ Fenoterol None or Fenoterol 159 < 30 wks, Matched No data Yes
Gerson26 1990 AI + Mg or AI + β-mimetic Mg or β-mimetic 57 < 34 wks, Matched Matched No
Norton23 1993 AI + Mg or AI + β-mimetic None, Mg, or β-mimetic 114 < 30 wks, Matched Matched Yes
Major27 1994 AI + Mg Mg ± β-mimetic 759 < 30 wks Unmatched Yes
Gardner29 1995 AI + Mg ± β-mimetic None, Mg, or β-mimetic 124 < 32 wks, Matched Matched No
Iannucci30 1996 AI + Mg Mg 56 < 30 wks Unmatched No data
al-Alaiyan28 1996 AI* None 30 < 34 wks Unmatched No data
Souter31 1998 AI + Salbutamol or AI + Nifedipine None, Salbutamol, or Nifedipine 79 < 30 wks, Matched Matched Yes
Pietrantoni33 1995 AI** None 280 < 32 wks, Matched Matched No data
Van Overmeire41 1998 AI + β-mimetic β-mimetic 76 < 33 wks, Matched Unmatched Yes
Hammerman24 1998 AI* None 105 < 34 wks, Matched No data No data
Vermillion32 1999 AI + Mg Mg 225 < 32 wks, Matched Matched Yes
Ojala25 2000 AI* None 176 < 32 wks Unmatched No data
Parilla40 2000 AI ± Mg* Mg or None 120 < 37 wks Unmatched No data
Weintraub34 2001 AI* None 219
0
< 32 wks Unmatched No data
Suarez39 2001 AI ± Mg* Mg 112 < 32 wks Unmatched No data
Abbasi35 2003 AI + Mg ± Terbutaline None, Mg, or Terbutaline 248 < 34 wks, Matched Matched Yes
Friedman42 2005 AI Mg or Ritodrine or Nifedipine 284 < 32 wks Unmatched No data
Murata38 2005 AI + Ritodrine Ritodrine + Mg 201 < 33 wks Unmatched No
Doyle 36 2005 AI + Mg Mg or none 549 < 32 wks Unmatched No data

GA denotes gestational age; AI denotes antenatal indomethacin; N denotes number of subjects; Mg denotes magnesium sulfate;

*

First choice tocolytic or sole agent.

**

Unclear about first choice tocolytic.