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. 2011 Nov 24;343:d7400. doi: 10.1136/bmj.d7400

Table 2.

 Transfers during labour or immediately after birth among healthy women with low risk pregnancies by their planned place of birth at start of care in labour. Values are numbers (percentages) of women

Home (n=16 840) Freestanding midwifery unit (n=11 282) Alongside midwifery unit (n=16 710)
All women
Transferred before delivery 2387 (14.2) 1863 (16.5) 3539 (21.2)
Transferred after delivery 1046 (6.2) 545 (4.8) 719 (4.3)
Timing of transfer missing 97 (0.6) 60 (0.5) 152 (0.9)
All transferred 3530 (21.0) 2468 (21.9) 4410 (26.4)
Nulliparous women (n=4568) (n=5187) (n=8350)
Transferred before delivery 1605 (35.1) 1535 (29.6) 2825 (33.8)
Transferred after delivery 407 (8.9) 306 (5.9) 427 (5.1)
Timing of transfer missing 45 (1.0) 43 (0.8) 108 (1.3)
All transferred 2057 (45.0) 1884 (36.3) 3360 (40.2)
Multiparous women (n=12 256) (n=6078) (n=8323)
Transferred before delivery 782 (6.4) 321 (5.3) 707 (8.5)
Transferred after delivery 639 (5.2) 238 (3.9) 291 (3.5)
Timing of transfer missing 51 (0.4) 14 (0.2) 43 (0.5)
All transferred 1472 (12.0) 573 (9.4) 1041 (12.5)

A small proportion of births planned in an obstetric unit also involved a transfer (n=135 (0.7%)).