The importance of confounding in observational before-and-after studies of road safety measures Export

@article{citeulike:4096437, abstract = {This paper discusses the importance of confounding in observational before-and-after studies of road safety measures. The importance of the approach taken to controlling for confounding factors is shown by means of examples. It is shown that the size of the effect on accidents attributed to a road safety measure can be profoundly affected by which confounding factors are controlled for in an evaluation study, and the way this is done. Simple before-and-after studies, not controlling for any confounding factors should never be trusted and are likely to overstate the effects of road safety measures.}, author = {Elvik, R.}, citeulike-article-id = {4096437}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/S0001-4575(01)00062-8}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0001-4575(01)00062-8}, doi = {10.1016/S0001-4575(01)00062-8}, issn = {00014575}, journal = {Accident Analysis \& Prevention}, keywords = {automobiles, bias, confounding, road\_safety}, month = {September}, number = {5}, pages = {631--635}, posted-at = {2009-02-25 02:37:17}, priority = {2}, title = {The importance of confounding in observational before-and-after studies of road safety measures}, url = {http://dx.doi.org/10.1016/S0001-4575(01)00062-8}, volume = {34}, year = {2002} }

TY - JOUR ID - citeulike:4096437 L3 - citeulike-article-id:4096437 N2 - This paper discusses the importance of confounding in observational before-and-after studies of road safety measures. The importance of the approach taken to controlling for confounding factors is shown by means of examples. It is shown that the size of the effect on accidents attributed to a road safety measure can be profoundly affected by which confounding factors are controlled for in an evaluation study, and the way this is done. Simple before-and-after studies, not controlling for any confounding factors should never be trusted and are likely to overstate the effects of road safety measures. IS - 5 JF - Accident Analysis & Prevention SN - 00014575 EP - 635 TI - The importance of confounding in observational before-and-after studies of road safety measures VL - 34 SP - 631 KW - automobiles KW - bias KW - confounding KW - road_safety AU - Elvik, R PY - 2002/09// UR - http://dx.doi.org/10.1016/S0001-4575(01)00062-8 ER -