Association between yaws case reporting and selected variables in the years before the most recent case report, all countries with a history of yaws.

In the leftmost column, short variable descriptions are provided with the variable names as they appear in Eqs 1-3 –please refer to the Methods for a detailed description of each variable; the next three columns give the regression coefficients for each of the three model specifications corresponding to Eqs 1-3; the standard error of the estimate is reported in parentheses below the coefficient.