Category | Description | Restricted risk-based provision: Principal paper from RCT First author; year; [country of study]; * indicates sibling paper(s) – see relevant reference list; (SR1 etc. if included in a related systematic review) | Systematic Reviews associated with this category |
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Midwifery-led interventions  (n = 12 principal papers, 8 ‘sibling’ papers and 5 SRs)  (see Additional file 1 reference list T4-1) | Studies where the main focus was on the impact of antenatal care delivered by midwives, or a comparison of midwifery-led care with another mode/model of delivery | Begley 2011 [Ireland] (SR2,3) Biro 2000 [Australia] * (SR2,3) Flint 1989 [UK - England] (SR2,3,4) Giles 1992 [Australia] (SR8,9) Gu 2013 [China] Harvey 2002 [Canada] (SR2) Hicks 2003 [UK - England] (SR2,3) Homer 2001 [Australia] * (SR2,3,7) McLachlan HL 2012 [Australia] (SR3) Turnbull 1996 [UK - Scotland] *** (SR2,3,4,8,9) Waldenstrom 1994 [Sweden] ** Waldenstrom 2000 [Australia] * (SR2,3) | 2 Devane et al. 2010 8 Khan-Neelofur et al. 1998 3 Sandall et al. 2013 – 9 Villar et al. 2007 4Waldenstrom et al. 1998 |
Reduced/flexible visit interventions  (n = 6 principal papers, 1 sibling paper and 4 SRs)  (see Additional file 1 reference list T4-2) | Models investigating whether reduced or flexible antenatal visits had an impact on maternal/infant outcomes | Henderson 2000 [UK – England] Jewell 2000 [UK – England] McDuffie 1996 [USA] * (SR5,8,9,10) Sikorski 1996 [UK – England] (SR5,8,9,10) Tucker 1996 [UK – Scotland] (SR8,9) Walker 1997 [USA] (SR5,8,9,10) | 5 Carroli et al. 2001 10 Dowswell et al. 2010 8 Khan-Neelofur et al. 1998 9 Villar et al. 2007 |
Multiple foci (n = 1 SR)  (see Additional file 1 reference list T4-3) |  | N/A | 7 Yakoob et al. 2009 – interventions that impact on stillbirth |