## Appendix A

Table 1: _Cont._  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**No. ** & **Ref. ** & **Country, Year** & **Technology Used** & \begin{tabular}{c} **Physiological Signals** \\ **Sensed** \\ \end{tabular}  & **Type of Device** & **Key Findings** \\ \hline
68. & [64] & Iraq, 2023 & IoT, wearable sensors & Heart rate, blood pressure, temperature & Wearable devices & \begin{tabular}{c} IoT-based health \\ monitoring systems offer \\ continuous and \\ real-time health data for \\ elderly care. \\ \end{tabular}  \\ \hline
69. & [81] & China, 2023 & Wearable sensors, IoT & \begin{tabular}{c} Heart rate, blood pressure, temperature \\ \end{tabular}  & Wearable devices & Wearable health \\ \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**No.** & **Ref.** & **Country, Year** & **Technology Used** & \multicolumn{2}{c}{**Physiological Signals**} & **Type of Device** & **Key Findings** \\ \hline
90. & [67] & China, 2024 & Wearable sensors, IoT & Heart rate, blood pressure, temperature & Wearable devices & Advancements in wearable technology and IoT improve elderly health monitoring. & Cloud-based systems for health monitoring offer \\ \hline
91. & [79] & India, 2024 & Wearable sensors, cloud computing & Heart rate, blood pressure, temperature & Wearable devices & Wearable devices \\  & & & & & & \\ \hline
92. & [98] & Spain, 2024 & Wearable sensors, IoT & Heart rate, blood pressure, temperature & Wearable devices & Wearable devices \\  & & & & & & chronic pain in elderly individuals and various physiological and stress indicators. & Wearable technology \\ \hline
93. & [85] & Canada, 2024 & Wearable sensors, IoT & Heart rate, blood pressure, temperature & Wearable devices & Wearable technology health monitoring solutions for elderly care. & Wearable health monitoring systems provide comprehensive health data for elderly care. \\ \hline
94. & [122] & Italy, 2024 & Wearable sensors, IoT & Heart rate, blood pressure, temperature & Wearable devices & Wearable health data for elderly care. & An innovative ionic conductive wearable material designed for real-time posture assessment and injury prevention in elderly individuals. \\ \hline
95. & [88] & China, 2024 & Wearable sensor & Breath rate, heart rate & Wearable sensor & Wearable sensor \\  & & & & & & \\ \hline
96. & [8] & China, 2024 & Sensing technology and intelligent algorithms & Heart rate monitoring, sleep monitoring, oxygen monitoring & Wearable smart bracelet & An intelligent board behavioral sensing technology and user-friendly features. & Face videos captured by a webcam or smartphone camera can help to detect hypertension-related complications early. \\ \hline
97. & [108] & USA, 2024 & Smartphone camera, machine learning & Blood pressure & Mobile and web application & Face videos captured by a webcam or smartphone camera can help to detect hypertension-related complications early. \\ \hline
98. & [57] & Bangladesh, 2024 & ESP32 module, GSM module, mobile application & Heart rate, oxygen saturation, temperature & Medicine reminder unit, mobile application & Improves medication adherence and patient safety through timely reminders and health monitoring features. \\ \hline
99. & [84] & China 2024 & IoT, wearable sensors, cloud computing & Heart rate, blood pressure, temperature & Wearable devices & Wearable devices \\  & & & & & & \\ \hline \hline \end{tabular}
\end{table} 
Table 1: _Cont._