§ Mr. WigleyTo ask the Secretary of State for Health how many sets of(a) twins, (b) triplets, (c) quadruplets, (d) quintuplets and (e) sextuplets were born in England in each year from 1990 to 1997; what was the total number of maternities in each year; and how many multiple births of each type in each year were conceived as a result of (i) in vitro fertilisation, (ii) gamete intra-fallopian transfer and (iii) other forms of assisted conception. [46930]
§ Mr. BoatengThe number of multiple maternities and total number of maternities to women resident in England from 1990 to 1997 is shown in table 1. The number of multiple births following in vitro fertilisation and donor insemination treatment at licensed clinics in England from 1 August 1991 to 31 March 1996 (the latest available) is shown in table 2. Figures were not collected before 1 August 1991 and those for gamete intra-fallopian transfer and other forms of assisted conception are not collected.
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Table 1—Maternities in England by multiplicity 1990–97 1990 1991 1992 1993 1994 1995 1996 1997 Quintuplets 0 1 1 0 0 0 0 0 Sextuplets 0 0 0 1 0 0 0 0 Septuplets 0 0 0 0 0 0 1 0 Total Maternities 662,050 655,705 646,266 631,710 624,004 607,793 608,845 601,481 Source:
Office for National Statistics
Table 2—Multiple births recorded following donor insemination (DI) and in vitro fertilisation (IVF) at licensed clinics in England 1991–96 Treatment type Number of twins Number of triplets Number of quadruplets (or more) 1991 DI 27 1 0 1991 IVF 210 29 1 1992 DI 83 7 1 1992 IVF 555 79 0 1993 DI 105 15 0 1993 IVF 689 114 1 1994 DI 96 14 1 1994 IVF 823 130 1 1995 DI 106 15 0 1995 IVF 1,054 135 1 1996 DI 26 1 0 1996 IVF 307 35 1 Notes:
The figures for total births include stillbirths and neonatal deaths (babies dying up to and including the 27th day after birth)The figures are based upon the latest verified data, covering treatments carried out from the start of the Human Fertilisation and Embryology Authority register (1 August 1991)Data for 1991 is for 1 August 1991 to 31 December 1991 onlyData for 1996 is from 1 January 1996 to 31 March 1996 onlySource:
HFEA