title: Influence of the Number of Predicted Words on Text Input Speed in Participants With Cervical Spinal Cord Injury.
abstract: OBJECTIVE
  To determine whether the number of words displayed in the word prediction software (WPS) list affects text input speed (TIS) in people with cervical spinal cord injury (SCI), and whether any influence is dependent on the level of the lesion.
  
  
  METHODS
  A cross-sectional trial.
  
  
  METHODS
  A rehabilitation center.
  
  
  METHODS
  Persons with cervical SCI (N=45). Lesion level was high (C4 and C5, American Spinal Injury Association [ASIA] grade A or B) for 15 participants (high-lesion group) and low (between C6 and C8, ASIA grade A or B) for 30 participants (low-lesion group).
  
  
  METHODS
  TIS was evaluated during four 10-minute copying tasks: (1) without WPS (Without); (2) with a display of 3 predicted words (3Words); (3) with a display of 6 predicted words (6Words); and (4) with a display of 8 predicted words (8Words).
  
  
  METHODS
  During the 4 copying tasks, TIS was measured objectively (characters per minute, number of errors) and subjectively through subject report (fatigue, perception of speed, cognitive load, satisfaction).
  
  
  RESULTS
  For participants with low-cervical SCI, TIS without WPS was faster than with WPS, regardless of the number of words displayed (P<.001). For participants with high-cervical SCI, the use of WPS did not influence TIS (P=.99). There was no influence of the number of words displayed in a word prediction list on TIS; however, perception of TIS differed according to lesion level.
  
  
  CONCLUSIONS
  For persons with low-cervical SCI, a small number of words should be displayed, or WPS should not be used at all. For persons with high-cervical SCI, a larger number of words displayed increases the comfort of use of WPS.
authors.affiliation: New Technologies Plate-Form, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France; Physical Medicine and Rehabilitation Department, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France; Inserm Unit 1179, Team 3: Technologies and Innovative Therapies Applied to Neuromuscular Diseases, University of Versailles St-Quentin-en-Yvelines, Versailles, France; Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France. Electronic address: samuel.pouplin@rpc.aphp.fr.
authors.forename: Samuel
authors.initials: S
authors.lastname: Pouplin
authors.affiliation: Inserm Unit 1179, Team 3: Technologies and Innovative Therapies Applied to Neuromuscular Diseases, University of Versailles St-Quentin-en-Yvelines, Versailles, France; Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France; Physiology-Functional Testing Ward, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Roche
authors.affiliation: Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Vaugier
authors.affiliation: New Technologies Plate-Form, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Antoine
authors.initials: A
authors.lastname: Jacob
authors.affiliation: Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Marjorie
authors.initials: M
authors.lastname: Figere
authors.affiliation: Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Sandra
authors.initials: S
authors.lastname: Pottier
authors.affiliation: University François Rabelais of Tours, Tours, France.
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Antoine
authors.affiliation: New Technologies Plate-Form, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France; Physical Medicine and Rehabilitation Department, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France; Inserm Unit 1179, Team 3: Technologies and Innovative Therapies Applied to Neuromuscular Diseases, University of Versailles St-Quentin-en-Yvelines, Versailles, France; Clinical Innovations Center 1429, Public Hospitals of Paris, Raymond Poincaré Teaching Hospital, Garches, France.
authors.forename: Djamel
authors.initials: D
authors.lastname: Bensmail
mesh_terms: D000328:Adult; D002574:Cervical Vertebrae / Q000293:injuries; D003143:Communication Devices for People with Disabilities; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D011782:Quadriplegia / Q000534:rehabilitation*; D012984:Software; D013119:Spinal Cord Injuries / Q000150:complications*; D014584:User-Computer Interface
keywords: Communication aids for disabled; Rehabilitation; Software; Spinal cord injuries