title: Development of the Thai Knee Osteoarthritis Screening Questionnaire (Thai-KOA-SQ) in Kanleurng Sub-District, Nakronpanom Province.
abstract: OBJECTIVE
  To develop a simple questionnaire to use for screening Thai people for knee osteoarthritis (OA).
  
  
  METHODS
  Subjects' characteristics and data covering all known risk factors for OA were collected from a sample of villagers at Kanleurng Sub-District, Nakronpanom Province. Hip, knee, and finger radiographs were taken from all subjects (n = 146) to diagnose OA. Multiple logistic regression was used to select the items contained in the questionnaire. A ROC curve was used to define the best cut-off point and distinguish between OA and non-OA.
  
  
  RESULTS
  Three factors were identified as being associated with knee OA and were included in a questionnaire. The Thai-KOA-SQ included questions about knee pain, age and body mass index (BMI). The questionnaire has 79.2% sensitivity, 78.4% specificity and 85.1% for the area under the ROC curve.
  
  
  CONCLUSIONS
  This questionnaire should be validated in a large group of people, in order to be further developed as the screening questionnaire for knee OA in the general Thai population.
authors.affiliation: Public Health Program, Faculty of Sciences and Technology, Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima, Thailand.
authors.forename: Bhuddhipong
authors.initials: B
authors.lastname: Satayavongthip
authors.forename: Parimoke
authors.initials: P
authors.lastname: Kerdchantuk
authors.forename: Rodchares
authors.initials: R
authors.lastname: Hanrinth
authors.forename: Theerasak
authors.initials: T
authors.lastname: Methieng
authors.forename: Phuwipol
authors.initials: P
authors.lastname: Khunpimul
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology; D015992:Body Mass Index; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008403:Mass Screening / Q000379:methods / Q000592:standards*; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000175:diagnosis* / Q000453:epidemiology; D011159:Population Surveillance; D015995:Prevalence; D011594:Psychometrics / Q000379:methods; D015203:Reproducibility of Results; D012424:Rural Population; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*; D013785:Thailand / Q000453:epidemiology