TY  - JOUR
PY  - 1979//
TI  - Estimation of nonrespondent BAC using a priori judgement
JO  - Accident analysis and prevention
A1  - Carlson, WL
SP  - 35
EP  - 41
VL  - 11
IS  - 1
N2  - Two methods of adjusting for non-participation bias in roadside breath testing surveys are compared. Method 1 uses the assumption that the probability of measured BAC level conditional on a priori judgement of drinking is the same for respondents and nonrespondents. Method 2 uses the assumption that the probability of a priori judgement of drinking conditional on BAC level is the same for respondents and nonrespondents. Method 2 yields substantially larger estimated probabilities of high BAC for nonrespondents. Both methods can be supported by sound logical arguments. Method 2 is shown to yield negative probabilities, when applied to a large roadside survey sample, and is thereby rejected.<p />
LA  - en
SN  - 0001-4575
UR  - http://dx.doi.org/
ID  - ref1
ER  -