A system, method, and apparatus is provided for estimating a risk of fallsfrom pressure sensordata and inertial sensor data. A classifier function may be generated torelate the inertialsensor and the pressure sensor data with the falls risk (e.g., falls risk orprospective falls data) ofthe person who generated the pressure sensor data and inertial sensor data.The classifierfunction may be used to predict a persons risk of falls based on inputs ofpressure sensor dataand inertial sensor data. Separate classifier functions may be generated formen and women,or separate classifier functions may be generated for patients who closedtheir eyes while datawas being collected and for patients who opened their eyes while data wasbeing collected.