Elective amniocentesis in low-risk pregnancies: Decision making in the eraof information and uncertainty

Objectives. Rational choice theory was applied to explain women's use of am niocentesis. Variables included knowledge about prenatal diagnostics, attit udes, and emotional preferences. Methods. Using structured instruments at 9 to 14 and at 29 to 34 weeks' we interviewed 232 Israeli women who had low-risk pregnancies. Results. Women who had elective amniocentesis (n=39) were more knowledgeabl e about prenatal diagnostics, risks of invasive procedures, and probability of fetal. abnormality in high maternal age; had fewer children; and had le ss favorable attitudes toward parenthood than those who had medically indic ated amniocentesis (n=57) and those who did not have amniocentesis (n=136). Conclusions. The use and possible overuse of amniocentesis were associated with having more information about prenatal diagnostics and definite emotio nal preferences.