## 2 Related Work
\begin{table}
\begin{tabular}{l l l l l l l l} \hline \hline
**Reference** & **Year** & **Knowledge Area** & **Document Type** & **Keywords** & **Problem** & **Solution Method** & **Contribution** \\ \hline
[17] & 2019 & Wireless Sensor & \multirow{2}{*}{Journal Article} & Elderly, WSN, & Monitoring health & Integrated WSN & Improved health tracking \\  & Networks & & Health Monitoring & parameters of elderly & with IoT & and emergency response \\
[18] & 2022 & Healthcare IoT & Journal Article & IoT, Vital Signs, & Real-time monitoring of & IoT-based health & Enhanced real-time \\  & & & Elderly Care & vital signs & monitoring system & monitoring capabilities \\
[19] & 2016 & Sensor Networks & Journal Article & WSN, Behavioral & Encouraging behavioral & WSN integrated with & Promoted healthier \\  & & & Change, Elderly & changes in elderly & behavior analysis tools & lifestyles \\
[20] & 2011 & Medical & \multirow{2}{*}{Journal Article} & Health Monitoring, & Continuous monitoring of & Wearable sensors & Improved chronic \\  & & & WSN, Elderly & chronic conditions & with WSN & condition management \\
[21] & 2018 & Smart Healthcare & Journal Article & Smart Sensors, Elderly, & Managing multiple health & Computershine health \\  & & & Vital Signs & parameters & management & management \\
[22] & 2019 & Geriatric Care & Conference & Elderly Care, WSN, & Enhancing care for elderly & Data-driven & Better elderly care \\  & & & Health Data & patients & WSN solutions & management \\
[23] & 2022 & Telemedicine & Review & Telehealth, WSN, & Remote health & Telemedicine with & Enhanced remote \\  & & & Vital Signs & monitoring for elderly & WSN integration & monitoring \\
[24] & 2011 & Behavioral Health & PhD Thesis & Behavior Change, & Modifying unhealthy & WSN-based & Effective behavior \\  & & & WSN, Elderly & behaviors & behavioural & modification \\
[25] & 2018 & Health Informatics & Review & WSN, Health & Real-time health data & Advanced WSN & Real-time health insights \\  & & & Monitoring, Elderly & collection & technologies & \\
[26] & 2019 & IoT Healthcare & Journal Article & IoT, Elderly, Health & Continuous health & IoT-enabled sensor & Improved health \\  & & & Monitoring & monitoring & networks & outcomes \\
[27] & 2019 & Wearable & \multirow{2}{*}{Journal Article} & Wearable & Wearable health & Integrated wearables & Enhanced mobility \\  & & Technology & Journal Article & Wearables, WSN, Elderly & monitoring & with WSN & and monitoring \\
[28] & 2020 & Health Technology & Review & Health Sensors, & Monitoring vital & Health sensors & Improved remote \\  & & & Elderly, WSN & signs remotely & integrated with WSN & health monitoring \\ \hline
[29] & 2022 & Mobile Health & Journal Article & mHealth, WSN, & Mobile health solutions & Mobile apps & Better health management \\  & & & Elderly Care & for elderly & with WSN & Better health management \\
[30] & 2020 & Smart Health & \multirow{2}{*}{Review} & Smart Devices, & Smart health monitoring & Smart health devices & Advanced monitoring \\  & & & Elderly, WSN & Integrated with WSN & capabilities \\
[31] & 2024 & Geriatric & \multirow{2}{*}{Journal Article} & Technology, Elderly & Technology for & Advanced WSN for & Enhanced elderly care \\  & & & Care, WSN & elderly health & health tracking & Enhanced elderly care \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Current references on wireless sensor networks and their applications for elderly health monitoring and behavioral change techniques.