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- Akiro H Duey, Aakanksha Rana, Francesca Siddi, Helweh Hussein, Jukka-Pekka Onnela, and Timothy R Smith.
- Department of Neurosurgery, Computational Neuroscience Outcomes Center, Brigham and Women's Hospital, Harvard Medical School, Boston , Massachusetts , USA.
- Neurosurgery. 2023 Sep 1; 93 (3): 670677670-677.
BackgroundPain evaluation remains largely subjective in neurosurgical practice, but machine learning provides the potential for objective pain assessment tools.ObjectiveTo predict daily pain levels using speech recordings from personal smartphones of a cohort of patients with diagnosed neurological spine disease.MethodsPatients with spine disease were enrolled through a general neurosurgical clinic with approval from the institutional ethics committee. At-home pain surveys and speech recordings were administered at regular intervals through the Beiwe smartphone application. Praat audio features were extracted from the speech recordings to be used as input to a K-nearest neighbors (KNN) machine learning model. The pain scores were transformed from a 0 to 10 scale to low and high pain for better discriminative capacity.ResultsA total of 60 patients were enrolled, and 384 observations were used to train and test the prediction model. Using the KNN prediction model, an accuracy of 71% with a positive predictive value of 0.71 was achieved in classifying pain intensity into high and low. The model showed 0.71 precision for high pain and 0.70 precision for low pain. Recall of high pain was 0.74, and recall of low pain was 0.67. The overall F1 score was 0.73.ConclusionOur study uses a KNN to model the relationship between speech features and pain levels collected from personal smartphones of patients with spine disease. The proposed model is a stepping stone for the development of objective pain assessment in neurosurgery clinical practice.Copyright © Congress of Neurological Surgeons 2023. All rights reserved.
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