Women in the ‘Routine Care Group’ will receive routine obstetric care reflecting current clinical
practice in Australian hospitals. Women in the‘Intervention Group’ will receive obstetric care, which will include
dietary and lifestyle advice, monitoring of blood glucose and further medical treatment for hyperglycaemia as
appropriate.
Primary study outcome: Incidence of large for gestational age infants.
Sample size: A sample size of 682 women will be sufficient to show a 50% reduction in the risk of large for
gestational age infants (alpha 0.05 two-tailed, 80% power, 4% loss to follow up) from 14% to 7% with dietary and
lifestyle advice and treatmen