RESEARCH

HOME RESEARCH
Health Analytics
Clinical Attributes
Speech and Language
Multimodal Model
Toward Development and Evaluation of Pain Level-Rating Scale for Emergency Triage based on Vocal Characteristics and Facial Expressions
Abstract
In order to allocate the healthcare resource, triage classification system plays an important role in assessing the severity of illness of the boarding patient at emergency department. The self-report pain intensity numerical-rating scale (NRS) is one of the major modifiers of the current triage system based on the Taiwan Triage and Acuity Scale (TTAS). The validity and reliability of self-report scheme for pain level assessment is a major concern. In this study, we model the observed expressive behaviors, i.e., facial expressions and vocal characteristics, directly from audio-video recordings in order to measure pain level for patients during triage. This work demonstrates a feasible model, which achieves an accuracy of 72.3% and 51.6% in a binary and ternary pain intensity classification. Moreover, the study result reveals a significant association of current model and analgesic prescription/patient disposition after adjusted for patient-report NRS and triage vital signs.
Figures
It shows a complete flow diagram of the proposed work. We segment the raw audio recordings manually and then extract acoustic low-level descriptors; for the video data, we apply a pre-trained constraint local neural field (CLNF) to track the (x, y) positions of the 68 landmark points on face and then extract descriptors based on to pain-related facial action units.
It shows a complete flow diagram of the proposed work. We segment the raw audio recordings manually and then extract acoustic low-level descriptors; for the video data, we apply a pre-trained constraint local neural field (CLNF) to track the (x, y) positions of the 68 landmark points on face and then extract descriptors based on to pain-related facial action units.
Keywords
behavioral signal processing (BSP) | facial expressions | triage | pain scale | vocal characteristics
Publication Date
2016/09/08
Conference
Interspeech
Interspeech 2016
DOI
10.21437/Interspeech.2016-408
Publisher
ISCA