Survey on knowledge, attitude, acceptance and related factors among pregnant women in Thailand regarding antenatal thalassaemia screening.

Thalassaemia is a common haematologic health condition in Southeast Asian countries (SEA) including Thailand. Reducing the birth of new thalassaemia cases is an effective method to control disease. The background level of knowledge and attitude of pregnant women on the disease influences their decision to perform antenatal screening. Unfortunately, the information about pregnant women's knowledge and attitude on antenatal thalassaemia screening in a developing country such as Thailand is lacking. We therefore conducted this cross-sectional study to examine patients' knowledge and to evaluate the factors which influence the patient's knowledge and attitude on antenatal thalassaemia screening. 1006 pregnant women who attended antenatal care at the Maha Chakri Sirindhorn Medical Center, Faculty of Medicine, Srinakharinwirot University, Ongkharak, Nakhon Nayok, Thailand were enrolled. We found that women's knowledge on antenatal thalassaemia screening is low. A maternal age of ≥35 years was associated with a higher level of knowledge. A higher level of education and multigravidity, a family history of thalassaemia and a positive level of attitude were found more likely to have higher scores for knowledge. A higher level of education and level of knowledge score were also more likely to have a positive attitude score, but multigravidity negatively affected the attitude score. Effective counselling should be monitored among women with a lower levels of education, those with no family history of thalassaemia, and in primigravidas. Lastly, a concurrent Down syndrome screening or foetal sex determination may be useful incentives to encourage the decision to undergo screening. Impact statement What is already known about this subject? Screening for the paternal and maternal thalassaemia carrier status is important for reducing the incidence of severely thalassaemia-affected children. Poorer education and receiving genetic counselling for the first time were the predictive factors for the low post-counselling knowledge in genetic counselling before second trimester genetic amniocentesis. What do the results of this study add? Pregnant women's knowledge of antenatal thalassaemia screening was low. We found that pregnant women aged ≥35 years had a higher level of knowledge. Women with a higher level of education, multigravidity, the presence of a family history of thalassaemia and a positive attitude were more likely to have higher scores for knowledge. A higher level of education and level of knowledge score were also more likely to have a positive attitude score but multigravidity negatively affected the attitude score. The encouraging factors, such as an adjunctive Down syndrome screening or foetal structural screening or foetal sex determination may be useful as the incentive tools. What are the implications of these finding for clinical practice and/or further research? The awareness of a possible incorrect understanding is important for the antenatal counselling in the developing countries. Intensive monitoring of effective counselling using a post-counselling test should be scheduled. The methods of effective counselling for antenatal thalassaemia in developing countries should be evaluated.