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Table 1 Description and quality assessments of included studies

From: Transfer to hospital in planned home births: a systematic review

Study Inclusion criteria Participants (% P01) Caregivers Study design Data source Duration of observation time after birth Analyses stratified for parity Study population representative Quality
Amelink-Verburg et al.[24] All women under midwifery care and with an intended home birth in the Netherlands during 01.01.2001-31.12.2003 N = 168,618 Primary level midwifes Prospective The Dutch Midwifery Perinatal Database (LVR1) 2 h after the birth of the placenta No Data from LVR1 covers 95% of midwifery practices. Medium
(Parity not described)
Anderson et al.[22] All Nurse-midwifery practices in the USA during 1987-1991 N = 11,084 Independent midwives Retrospective Data collection forms from the midwives ..”early postpartum period” No 66% of midwifery practices participated. Medium
(Parity not described)
BECG2[1] All NHS trusts providing intrapartum care at home in England (UK) during April 2008-April 2010 N = 16,840 National Health Service midwives Prospective Data collection forms from midwives and hospitals 48 h postpartum Yes 97% of trusts providing home birth services participated. (Home births attended by independent midwives in the region were not included) Good
(27.2%)
Blix et al.[25] All planned home births in Norway during 01.01.1990-31.12.2007 N = 1631 Independent midwives Retrospective Midwives’ patient files 5 days postpartum Yes Unclear, probably >70% of all planned home births during the study period Medium
(22.6% )
Davies et al.[23] All women in the North Regional Health Authority area (UK) who planned for a home birth and expected to deliver in 1993 N = 177 National Health Service midwives Prospective Data collection forms from midwives, women and GP’s Not described Partly Unclear, probably were all planned home births attended by NHS midwives included. Medium
(9.1%)
Hansen and et al.[27] All home births assisted by midwives employed by the local health authorities in the Municipality of Copenhagen (Denmark) during 1980-1982 N = 102 Midwives employed at Hvidovre Hospital Retrospective Hospital patient files Not described No All planned home births assisted by midwives employed by the local health authorities were included. (Home births attended by independent midwives in the region were not included) Medium
(about 50%)
Howe [17] All home births attended by a registered midwife in the south-west of Western Australia during 01.01.1983-31.12.1986 N = 165 Independent midwives Retrospective Midwifery registers Not described Partly All midwives participated Medium
(31.5%)
Hutton et al.[18] All home births attended by Ontario midwives during 01.04.2003-31.03.2006 (Canada) N = 6,692 Certified midwives who are required to submit all data to a regional database Retrospective The Ontario Ministry of Health Database Not described Partly All planned home births were included Medium
(34.3%)
Johnson and Daviss [4] All home births involving certified professional midwives across the USA and Canada during 01.01.2000-31.12.2000 N = 5,418 Independent midwives Prospective Data collection forms from the midwives Not described No 73% of the midwives asked, participated. <1% of the women declined participation Medium
(31.2%)
Janssen et al.[19] All planned home births attended by regulated midwives in British Columbia (Canada) during 01.01.1998-31.12.1999 N = 797 Regulated midwives Prospective Data collection forms Not described No >99% of the data collection forms were received Medium
(about 47%)
Lindgren et al.[26] All planned home births in Sweden during 01.01.1992-31.07.2005 N = 1,025 Independent midwives Retrospective Data collection forms to the mothers …”shortly after planned home birth” Yes 99% of the women asked, agreed to participate. Unclear if all home births were identified. Medium
(23.8%)
McMurtrie et al.[15] The first 100 booked home births at the St. George Homebirth Program during Nov 2005-March 2009 in New South Wales (Australia) n = 70 attempted home births Midwives employed at St George Hospital Prospective Databases at the birth centre Not described No All planned homebirths were included. (Home births attended by independent midwives in the region were not included) Medium
(Parity not described)
Murphy et al.[21] All nurse-midwifery practices providing home birth services in the USA during Dec 1994-Dec 1995 N = 1,221 Independent midwives Prospective Data collection forms from the midwives, data from hospital files Not described Partly 64% of midwifery practices participated. 20% of women transferred to hospital were lost-to-follow-up Medium
(22.0%)
Parratt et al.[16] All planned home births in Victoria (Australia) during 1995-1998 N = 419 Independent midwives Retrospective Midwives’ patient files Not described No 50-60 births were not included Medium
(about 31%)
Tyson [20] All planned midwife-attended home births in Toronto (Canada) during Jan 1983-Jul 1988 N = 1,001 Independent midwives Retrospective Midwives’ patient files 4 days postpartum Yes All midwives participated Medium
(Parity not described)
  1. 1P0 = nulliparous women. 2Birthplace in England Collaborative Group.