Differences in lower scale points of each factor by age group of subjects. The relationships between subjects' age and factor I or factor II points of pre-earthquake, post earthquake and now are shown as mean and standard deviation values. In each graph, plots from left to right correspond to the six groups of age shown in Table 1. Trends of GHQ-12 scores with increasing age of subjects were analyzed by the ANOVA. The p value in each test is shown in the plot.