When this variable is dichotomised (postsecondary education versus the other two levels combined), the effect is indeed highly significant (odds ratio (OR) = 1.65, 95% confidence interval (CI) = 1.25–2.17), and estimates of other parameters do not differ.
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Health information seeking on the Internet: a double divide? Results from a representative survey in the Paris metropolitan area, France, 2005-2006.
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