Methods used in economic evaluations of prenatal screening are disputedBMJ 1996; 313 doi: https://doi.org/10.1136/bmj.313.7052.303a (Published 03 August 1996) Cite this as: BMJ 1996;313:303
- David J Torgerson,
- Anne Spencer
- Research fellow National Primary Care Research and Development Centre, Centre for Health Economics, University of York, York YO1 5DD PhD student Department of Economics and Related Studies, University of York
EDITOR,—Nicholas Wald and Hilary Watt's letter1 about our paper on marginal analysis2 contains some important misconceptions regarding economic evaluation of prenatal screening services.
Firstly, we agree with the authors that they did not properly evaluate the economic consequences of changing from screening based on maternal age to biochemical screening in their earlier work3: this is precisely the point that we were making in our paper. …