## 3 Results and Discussions
### Structure of Respondents' U-Turn Motivation by Living Environments as Important Factors
\begin{table}
\begin{tabular}{c l} \hline \hline
**Node** & \multicolumn{2}{c}{**Branch Conditions 1 (Living environment; The Evaluation)**} \\ \hline \multirow{2}{*}{Node 3} & Attachment to region; Hometown \textgreater{} Current residence \\  & \(\rightarrow\) Pleasantness of climate in Hometown; Low \\ \hline \multirow{2}{*}{Node 5} & Attachment to region; Hometown \textless{} Current residence (Especially difference \textgreater{} 2) \\ \hline \multirow{2}{*}{Node 7} & Attachment to region; Hometown \textgreater{} Current residence \\  & \(\rightarrow\) Pleasantness of climate in Hometown; Medium or High \\  & \(\rightarrow\) Sufficiency of traffic environment; Hometown \textgreater{} Current residence \\ \hline \multirow{2}{*}{Node 9} & Attachment to region; Hometown \textless{} Current residence (Especially difference \textgreater{} 0 or 1) \\  & \(\rightarrow\) Sufficiency of daily shopping environment in Hometown; Low \\ \hline \multirow{2}{*}{Node 11} & Attachment to region; Hometown \textgreater{} Current residence \\  & \(\rightarrow\) Pleasantness of climate in Hometown; Medium or High \\  & \(\rightarrow\) Sufficiency of traffic environment; Hometown \textless{} Current residence \\  & \(\rightarrow\) Ease of supporting parents in Current residence; Low or Medium \\ \hline \multirow{2}{*}{Node 12} & Attachment to region; Hometown \textgreater{} Current residence (Especially difference \textgreater{} 0 or 1) \\  & \(\rightarrow\) Sufficiency of daily shopping environment in Hometown; Medium or High \\  & \(\rightarrow\) Sufficiency of daily shopping environment in Hometown; Medium or High \\  & \(\rightarrow\) Pleasantness of climate in Current residence; Medium or High \\  & \(\rightarrow\) Ease of visiting ancestral grasses; Hometown \textless{} Current residence \\  & (Especially difference \textgreater{} 2) \\ \hline \multirow{2}{*}{Node 18} & Attachment to region; Hometown\textless{} Current residence (Especially difference \textgreater{} 0 or 1) \\  & \(\rightarrow\) Sufficiency of daily shopping environment in Hometown; Medium or High \\  & \(\rightarrow\) Pleasantness of climate in Current residence; Medium or High \\  & \(\rightarrow\) Ease of visiting ancestral grasses; Hometown \textgreater{} Current residence \\  & (Including difference \textgreater{} 1 as the case that both evaluations are almost the same) \\  & \(\rightarrow\) Ease of caring for inherited lots or houses in Hometown; High \\ \hline \multirow{2}{*}{Node 19} & Attachment to region; Hometown\textless{} Current residence (Especially difference = 0 or 1) \\  & \(\rightarrow\) Sufficiency of daily shopping environment in Hometown; Medium or High \\  & \(\rightarrow\) Pleasantness of climate in Current residence; Medium or High \\  & \(\rightarrow\) Ease of visiting ancestral grasses; Hometown \textgreater{} Current residence, \\  & (Including difference = 1 as the case that both evaluations are almost the same) \\  & \(\rightarrow\) Ease of caring for inherited lots or houses in Hometown; Low or Medium \\  & \(\rightarrow\) Pleasantness of climate; Hometown \textgreater{} Current residence \\  & (Especially difference is = \textgreater{} -2–0) \\ \hline \end{tabular}
\end{table} 
Table 5: The summaries of branch conditions and their rankings at each last node. items about the spiritual connection to the regions (Attachment to Region) at the top of the tree, and items about comfortableness and convenience (Daily Shopping, Pleasantness of Climate, and Traffic) in the middle of the tree. At the bottom were environments related to family properties or human relationships (Caring for Inherited Lots or Houses, Supporting Parents, Visiting Ancestral Graves). The evaluation of regional attachment and climate were early branch conditions, and they reappeared in subsequent branch conditions. When Node 1 and Node 2, or Node 3 and Node 4, are compared, the difference between the evaluations of these two living environments significantly modified changed the tendency of U-turn migration.