Those factors, Montgomery said, were likely part of what was at play after her baby's stillbirth.
Charlotte Bevan, from the stillbirth and neonatal death charity Sands, said hundreds of stillbirths were potentially avoidable.
The report also found lone parents were nine times as likely to have a stillbirth as other parents.
As many as one in five pregnancies ends in miscarriage, while stillbirth happens in about five in every 1, 000 births.
"This year's report shows conclusive evidence of improving stillbirth and neonatal mortality rates, " said Dr Jon Dorling, lead author of the report.
Research published in the Lancet in 2011 indicated that the UK had higher stillbirth rates than almost every other high-income country.
Complication rates, including stillbirth or other problems affecting the baby, were 5.3 per 1, 000 births in hospital compared with 9.3 per 1, 000 for home births.
The stillbirth charity Sands welcomed the fall, but noted that as the birth rate is rising the number of babies who die remains the same.
The authors calculated that an extra 550 women would have to be induced at 39 weeks in the UK each year to prevent one stillbirth.
Ms Hinds said that Sands (Stillbirth and Neo-natal Death Society) would be kept informed as the investigation progresses and that discussions over a permanent memorial would continue.
BBC: Mortonhall Crematorium: Baby ashes parents call for truth
Other new petitions considered included one on behalf of Sands, the stillbirth and neonatal death charity, calling for a strategy for reducing levels of stillbirths and neonatal deaths.
According to Stillbirth and Neonatal Death charity, Sands, more than 4, 000 babies are stillborn - born dead after 24 completed weeks of pregnancy or more - in the UK annually.
The data showed that at 39-40 weeks pregnant, women over 40 double their risk of stillbirth compared with women under 35 - two in 1, 000 compared with one in 1, 000.
Dorothy Maitland, operations manager for Sands (the Stillbirth And Neonatal Death Society), had her daughter Kaelen cremated at Mortonhall in 1986, and was told there would be no ashes to scatter.
In the midst of my demanding job as a tenure-track professor, I became pregnant naturally, but then had to take medical leave for a rare pregnancy complication, which ended in the stillbirth of twin daughters.
In their paper, the authors said there was a proven link between advancing maternal age and increased risk of complications during pregnancy - and a strong link with increased risk of stillbirth and neonatal death.
Every day in Britain, about 315 women experience a miscarriage, approximately 151 babies are born prematurely and 10 babies are stillborn, according to baby charity Tommy's, which funds research into the causes and prevention of miscarriage, premature birth and stillbirth.
The committee later heard evidence from Fiona Giraud from Betsi Cadwaladr University Health Board, Angela Hopkins from Cwm Taf Health Board, who largely reiterated what had been said before, with Ms Hopkins calling for the set-up of a national stillbirth enquiry team.
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