frequency and quantity of cigarettes consumed per month. Using the 2011 National Youth Tobacco Survey a bivariate ordered probit … model is estimated along with associated conditional probabilities controlling for both youth-specific factors and peer …

for sugar and for sugar in soft drinks was analyzed. Using a bivariate ordered probit model, it was discovered that high …

We present a measure of the correlation between the education levels of spouses based on a bivariate ordered probit … model. The change in this correlation over time can be measured while controlling for the large changes in the educational …