title: [Sensitivity and specificity of a utility model of the detection of diabetic neuropathy].
abstract: OBJECTIVE
  To determine whether a utility model can be used with acceptable sensitivity and specificity for the diagnosis of diabetic peripheral neuropathy (DPN).
  
  
  METHODS
  Cross sectional study, non-probability sampling, in 381 type 2 diabetic patients with diabetic foot risk. To determine the DPN, it was evaluated the protective sensation in 10 sites on the foot. It was a positive diagnosis if three or more points showed insensitivity at the touch of the skin with Semmes-Weinstein monofilament (SWM). Monofilament was compared to the utility model (MMU); the diagnostic methods of application were the same for both.
  
  
  RESULTS
  Mean age was 62 years, 11 years of development of DM, mean body mass index of 29 kg/m2, average glucose 129 mg/dL (78-264 mg/dL). With sensitivity of 73.68%, 97.67% of specificity, positive predictive value 77.78%, negative predictive value 97.10%, the positive likelihood ratio was 31.59 and the negative likelihood ratio 0.27.
  
  
  CONCLUSIONS
  Currently, diagnostic devices for tactile sensory loss are not readily available in our country; therefore, the results of this research will help to make the diagnosis of the MMU timely, inexpensive and easily accessible.
authors.affiliation: Centro de Investigación Educativa y Formación Docente, Instituto Mexicano del Seguro Social, San Luis Potosí, México. miguel.mendozaro@imss.gob.mx
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Mendoza-Romo
authors.forename: María Cleofas
authors.initials: MC
authors.lastname: Ramírez-Arriola
authors.forename: José Fernando
authors.initials: JF
authors.lastname: Velasco-Chávez
authors.forename: Rafael Natividad
authors.initials: RN
authors.lastname: Nieva-de Jesús
authors.forename: Carlos Vicente
authors.initials: CV
authors.lastname: Rodríguez-Pérez
authors.forename: Luis Alvaro
authors.initials: LA
authors.lastname: Valdez-Jiménez
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D017719:Diabetic Foot / Q000175:diagnosis; D003929:Diabetic Neuropathies / Q000175:diagnosis*; D003943:Diagnostic Techniques, Neurological; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008962:Models, Theoretical; D012680:Sensitivity and Specificity