## 4 Results and Discussion
### Discussion
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Group**} & \multicolumn{6}{c}{**Pairwise Variable Difference**} \\ \cline{2-9}  & \multirow{2}{*}{**Average**} & \multirow{2}{*}{\begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **Standard** \\ **Error of** \\ **the Mean** \\ \end{tabular} } & \multicolumn{2}{c}{**Confidence Interval for 95\%**} & \multirow{2}{*}{**t**} & \multirow{2}{*}{**df**} & \multirow{2}{*}{
\begin{tabular}{c} **Significance** \\ **Two-Tailed)** \\ \end{tabular} } \\ \cline{5-6}  & & & & & & **Lower Limit** & & \\ \hline group A & 2.467 & 1.727 & 0.446 & 1.511 & 3.423 & 5.533 14 & 0.000 \\ group B & 2.000 & 1.773 & 0.458 & 1.018 & 2.982 & 4.369 14 & 0.001 \\ group C & 0.400 & 1.242 & 0.321 & \(-\)0.288 & 1.088 & 1.247 14 & 0.233 \\ group D & 1.600 & 1.957 & 0.505 & 0.516 & 2.684 & 3.167 14 & 0.007 \\ group E & 0.533 & 1.125 & 0.291 & \(-\)0.090 & 1.157 & 1.835 14 & 0.088 \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Sample \(t\)-test checklist for pre- and post-test dependent samples of “stress” in the same group of middle-aged and elderly people in the community. 2.2 Difference Analysis of the Overall Pre- and Post-Test of \"Stress\" among the Elderly in the Community before and after the Aromatherapy Intervention  
From Tables 4 and 5  
1. The average \"pressure\" of Group A was 5.400 and 2.933, before and after the test, respectively. The t value of a paired sample test was 5.533, \(p<0.05\), reaching a significant level, indicating that the satisfaction of Group A in the pre-test and post-test was different, and that the post-test (M = 2.933) was lower than the pre-test (M = 5.400). 2. The mean values of \"pressure\" in Group B were 2.867 and 0.867 in the pre-test and post-test, respectively. The t value of the paired sample test was 4.369, \(p<0.05\), reaching a significant level, which showed that the satisfaction of Group B in the pre-test and post-test was different, and that the post-test (M = 0.867) was lower than the pre-test (M = 2.867). 3. The mean values of \"pressure\" in Group C were 2.267 and 1.867 in the pre- and post-test, respectively. The t value of this paired sample test was 1.247, \(p>0.05\), which did not reach a significant level. It showed that there was no significant difference in the satisfaction of Group C before and after the \"stress\" test. 4. The mean values of \"pressure\" in Group D were 3.533 and 1.933 in the pre- and post-test, respectively. The t value of the paired sample test was 3.167, \(p<0.05\), which reached a significant level. It showed that there was a difference in satisfaction for \"stress\" in the pre-test and post-test in group D, and that the post-test (M = 1.933) was lower than the pre-test (M = 3.533). 5. The mean values of \"pressure\" in group E were 3.600 and 3.067 in the pre- and post-test, respectively. The t value of the paired sample test was 1.835, \(p>0.05\), which did not reach a significant level. This result indicated that there was no significant difference in the satisfaction of Group E before and after the \"stress\" test. The observations for the experiments \"before\" and \"after\" the treatment with aromatherapy, showed that there were also significant differences in the \"stress\" of middle-aged and elderly people in Groups A, B, and D, but there was no significant difference observed in Groups C and E. The possible reason was that Group C only used base oil and did not use compound essential oils, while Group E did not use aromatherapy intervention resulting in no significant difference  
From the results of this study, we can conclude that there was a significant difference in the \"stress\" level of the elderly in the same groups before and after the aromatherapy intervention.