A randomised controlled trial of a decision aid for prenatal screening and diagnosis [ 2003 - 2005 ]

Research Grant

Researchers: Prof Jane Halliday (Principal investigator) ,  Prof Jane Gunn ,  Prof Robin Bell

Brief description Prenatal screening is becoming increasingly available to pregnant women in many countries, including Australia, to test for Down syndrome and other chromosomal disorders as well as neural tube defects. Almost half the pregnant women in Victoria are now undergoing prenatal screening. Inherent in all screening tests is the possibility of false positive or false negative results. More than 5% of all women undergoing prenatal screening are likely to receive false positive results and must decide whether to put the pregnancy at risk of miscarriage, or a possible pregnancy termination, as a result of the necessary follow-up invasive diagnostic test. Many women do not realise they may have to face this decision. Others are not aware that their baby may be born with undiagnosed problems even if they have the screening test. One aspect of care that is likely to have a crucial influence on women's experience of screening is how much they are informed about a test prior to undergoing it. Most women visit a GP early in the first trimester of pregnancy. This visit provides an opportunity for information provision about prenatal screening. Decision aids have been developed as adjuncts to practitioners' counselling to prepare patients for decision-making. In this project we will be developing a decision aid for women considering their prenatal screening options. A randomised controlled trial will compare the efficacy of a general educational pamphlet to that of a tailored decision aid in preparing women for decision-making about prenatal screening. A total of 500 women who are less than 11 weeks pregnant and are attending one of 50 GPs will be included. Self-report questionnaires will be used to assess women immediately after use of the educational materials and then again at 24 weeks of pregnancy. The impact of the educational materials on informed choice, decisional conflict, anxiety, depression and uptake of prenatal screening tests will be compared.

Funding Amount $AUD 269,625.00

Funding Scheme NHMRC Project Grants

Notes Standard Project Grant