If the statistical significance level (i.e., p-value) is less than .05 (i.e., p < .05), you have a statistically significant result and the proportion of non-smokers before and after the intervention is statistically significantly different. Alternatively, if p > .05, you do not have a statistically significant result and the proportion of non-smokers before and after the intervention is not statistically significantly different (i.e., the proportion of non-smokers does not change over the course of the intervention). In our example, p = .027 (using the exact p-value), which means that the proportion of non-smokers is statistically significantly different after the intervention as compared to before. Put another way, the change in the proportion of non-smokers following the intervention was statistically significant.