Health-related quality-of-life assessment of prenatal diagnosis: chorionic villi sampling and amniocentesis.
This study assesses the health-related quality-of-life (HRQL) effects of chorionic villi sampling (CVS) and genetic amniocentesis (GA), including both process and outcomes of prenatal diagnosis. The HRQL of 126 women participating in a randomized controlled clinical trial of CVS versus GA in Toronto and Hamilton, Ontario, was assessed in four interviews at weeks 8, 13, 18, and 22 of pregnancy. Statistical analyses included analysis of variance, repeated measures analysis of covariance, chi-square, Fisher's exact test, Student's t-tests, and paired t-tests. Utility scores for patients undergoing CVS exceeded those for GA patients at week 18 (p = 0.04). Utility scores for hypothetical health states did not differ significantly by trial arm. CVS results in slightly improved HRQL during prenatal diagnosis. This advantage needs to be weighed against the high disutility patients attach to infrequent outcomes associated with pregnancy losses, equivocal diagnoses, and diagnostic inaccuracy.
Institute of Health Economics, Edmonton, Alberta, Canada. dfeeny@pharmacy.ualberta.ca
David
D
Feeny
Marie
M
Townsend
William
W
Furlong
Darrell J
DJ
Tomkins
Gail Erlick
GE
Robinson
George W
GW
Torrance
Patrick T
PT
Mohide
Qinan
Q
Wang
D000328:Adult; D000649:Amniocentesis; D015193:Chorionic Villi Sampling; D005260:Female; D006801:Humans; D011788:Quality of Life; D013223:Statistics as Topic