title: Supportive care needs of Mexican adult cancer patients: validation of the Mexican version of the Short-Form Supportive Care Needs Questionnaire (SCNS-SFM).
abstract: OBJECTIVE
  The purpose of this study is to validate the Mexican version of the Short-Form Supportive Care Needs survey (SCNS-SFM).
  
  
  METHODS
  A cross-sectional survey was conducted from June to December 2013 at the Oncology Hospital of the Mexican Institute of Social Security in Mexico City. The study included 825 subsequent cancer patients >20 years of age with all forms of solid cancer. Patients had prior surgical removal of histologically confirmed cancer and attended outpatient consultations. Validation of SCNS-SFM included the following: (1) content validity through a group of experts; (2) construct validity through an exploratory factor analysis based on the polychoric correlation matrix; (3) internal consistency using Cronbach's alpha; (4) convergent validity between SCNS-SFM and quality of life, anxiety, and depression scales by calculating Pearson's correlation coefficient; (5) discriminative validity through analysis of MANOVAs; and (6) test-retest reliability using intraclass correlation coefficient calculations.
  
  
  RESULTS
  SCNS-SFM has 33 items with five factors accounting for 59 % of total variance. Cronbach's alpha values ranged from 0.78 to 0.90 among factors. SCNS-SFM has good convergent validity compared with quality of life and depression and anxiety scales and good discriminative validity, revealing great information, psychological support, and physical daily living needs for women, patients <60 years, and high physical daily living needs for those with <1 year since cancer diagnosis, with advanced disease stages and current chemo- or radiotherapy. Intraclass correlation coefficient between SCNS-SFM measurements was 0.9.
  
  
  CONCLUSIONS
  SCNS-SFM has acceptable psychometric properties and is suitable to evaluate supportive care needs of cancer patients.
authors: Epidemiology and Health Services Research Unit CMN Siglo XXI, Mexican Institute of Social Security, Av. Cuahutemoc 330, Col. Doctores. Del. Cuahutemoc, 06720, Mexico City, Mexico, svetlana.doubova@gmail.com.
authors: Svetlana V
authors: SV
authors: Doubova
authors: Rebeca
authors: R
authors: Aguirre-Hernandez
authors: Marcos
authors: M
authors: Gutiérrez-de la Barrera
authors: Claudia
authors: C
authors: Infante-Castañeda
authors: Ricardo
authors: R
authors: Pérez-Cuevas
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology*; D001007:Anxiety / Q000523:psychology; D003430:Cross-Sectional Studies; D003863:Depression / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D008875:Middle Aged; D009369:Neoplasms / Q000523:psychology* / Q000601:surgery; D011594:Psychometrics / Q000379:methods*; D011788:Quality of Life / Q000523:psychology; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires