Birth weights are a big one – low birth weight occurs in half of all twin births, and up to 65 per cent of all multiples are born premature.

But parents also count finances, research data, and the people around them.

The theme of Multiple Birth Awareness Week 2018, running until Sunday, is “strength in numbers”.

Albury-Wodonga Multiple Birth Association president Abigail Cooper said the theme was also about the different support services and groups dedicated to families with multiples.

“It’s really so important to be surrounded by a supportive network and you do that with numbers; whether it’s your family or your friends, or community services,” she said.

“At the moment we have more than 70 members which is huge, the biggest we’ve had, and it’s looking like we’re going to maintain that.

“The group is a mix of existing members and new members; there were about 25 sets of multiples born in Wodonga last year, which is consistent.

“Support is at the core of what the group’s about.”

Ms Cooper is holding an antenatal information session from 7.30pm on Friday at the Felltimber Community Centre for parents expecting multiples.

“We’ll also be holding a family day next Sunday at Inflatable Funhouse,” she sad.

“One of our big goals is engaging our members to take part in events and celebrate what’s so special about having multiples.”

AMBA chairwoman Ashlee Tenberge said many families faced challenges and that “the task of carrying, delivering and raising two or more children at once is extremely demanding with many associated risks and challenges”.

“To AMBA, ‘strength in numbers’ represents what the group is all about – giving families with twins, triplets or more, strength by providing information and support,” she said.

“It's about connecting these families with a community of over 5000 other families of multiples.”