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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Int J Geriatr Psychiatry. 2011 May 10;27(4):382–393. doi: 10.1002/gps.2730

Figure 2. Interaction Effects and Z-Statistics with 95% CIs across All Observations*.

Figure 2

* Derived using the INTEFF command in Stata 11.0 based on logistic regressions without random effects. Two graphs are reported for each of the four HUI-III*caregiver burden interaction models generated. Both plot the predicted probabilities for each observation on the x axis. The first compares the interaction effects calculated using the non-linear method (scatter plot) to those calculated using the linear method (line). The second plots the z-statistics calculated for each observation along with the 95% confidence interval. Those z-statistics falling between −1.96 and +1.96 (the outer two lines) are statistically significant the .05 level.