title: Online self-report questionnaire on computer work-related exposure (OSCWE): validity and internal consistency.
abstract: OBJECTIVE
  To develop an online, self-report questionnaire on computer work-related exposure (OSCWE) and to determine the internal consistency, face and content validity of the questionnaire.
  
  
  METHODS
  The online, self-report questionnaire was developed to determine the risk factors related to musculoskeletal disorders in computer users. It comprised five domains: personal, work-related, work environment, physical health and psychosocial factors. The questionnaire's content was validated by an occupational medical doctor and three physical therapy lecturers involved in ergonomic teaching. Twenty-five lay people examined the feasibility of computer-administered and the user-friendly language. The item correlation in each domain was analyzed by the internal consistency (Cronbach's alpha; alpha).
  
  
  RESULTS
  The content of the questionnaire was considered congruent with the testing purposes. Eight hundred and thirty-five computer users at the PTT Exploration and Production Public Company Limited registered to the online self-report questionnaire. The internal consistency of the five domains was: personal (alpha = 0.58), work-related (alpha = 0.348), work environment (alpha = 0.72), physical health (alpha = 0.68) and psychosocial factor (alpha = 0.93).
  
  
  CONCLUSIONS
  The findings suggested that the OSCWE had acceptable internal consistency for work environment and psychosocial factors. The OSCWE is available to use in population-based survey research among computer office workers.
authors.forename: Keerin
authors.initials: K
authors.lastname: Mekhora
authors.forename: Wattana
authors.initials: W
authors.lastname: Jalayondeja
authors.forename: Chutima
authors.initials: C
authors.lastname: Jalayondeja
authors.forename: Petcharatana
authors.initials: P
authors.lastname: Bhuanantanondh
authors.forename: Asadang
authors.initials: A
authors.lastname: Dusadiisariyavong
authors.forename: Rujiret
authors.initials: R
authors.lastname: Upiriyasakul
authors.forename: Khajornyod
authors.initials: K
authors.lastname: Anuraktam
mesh_terms: D000328:Adult; D003201:Computers; D006804:Ergonomics; D005260:Female; D006801:Humans; D008297:Male; D009140:Musculoskeletal Diseases / Q000453:epidemiology*; D009784:Occupational Diseases / Q000453:epidemiology*; D057566:Self Report; D011795:Surveys and Questionnaires