M. Sadler, SERUM SCREENING FOR DOWNS-SYNDROME - HOW MUCH DO HEALTH-PROFESSIONALSKNOW, British journal of obstetrics and gynaecology, 104(2), 1997, pp. 176-179
Objective To assess knowledge about serum screening for Down's syndrom
e in health professionals involved in antenatal care. Design Postal qu
estionnaire survey of knowledge of performance and interpretation of s
erum screening. Setting Portsmouth and South East Hampshire health dis
trict. Population All health professionals likely to be involved in an
tenatal care. Methods Questionnaires were sent to all general practiti
oners (n = 288), hospital midwives (n = 129), community midwives (n =
71), and obstetricians (n = 29) working in the district. Main outcome
measures Total number of correct responses given to eight factual ques
tions and percentage of correct responses to each individual question.
Results Responses were received from 434 health professionals (84%).
Fifty-nine percent of health professionals correctly answered only a h
alf or less of the factual questions on serum screening. Questions rel
ating to the sensitivity, specificity, and positive predictive value w
ere particularly poorly answered. Obstetricians scored most highly. Ge
neral practitioners scored significantly less than the other groups. C
onclusions Women need accurate information to give informed consent to
serum screening. Most health professionals likely to be involved in a
ntenatal care in this district do not fully understand the test and ar
e thus unlikely to provide such information. Changes in the provision
of maternity services following Changing Childbirth may increase the i
nput of midwives and general practitioners. Training of professionals
about serum screening should be reviewed.