title: A comparative study of reliability of self report of tobacco use among patients with bipolar and somatoform disorders.
abstract: OBJECTIVE
  To compare the use and reliability of self-reported tobacco use (both smoked and smokeless) among patients with bipolar disorder and somatoform disorders.
  
  
  METHODS
  The study was conducted at psychiatry out-patient department of a tertiary care hospital. A total of 50 consecutive patients were recruited. The subjects were asked about the use of tobacco products (smoked as well as smokeless) over the past one week. Those reporting affirmatively in response to the question were assessed using Fagerstrom Test for Nicotine Dependence (FTND) scales. Quantitative urinary cotinine levels were assessed using Enzyme-linked immunosorbent assay (ELISA).
  
  
  RESULTS
  Calculation of Cohen's kappa using cross tabulation revealed discordance between the self-reported use of smoked as well as smokeless tobacco products in both the groups. Analysis using the lower cut off of 50 ng/ ml also revealed discordance between the self-reported tobacco use (smoked as well as smokeless) for both the groups.
  
  
  CONCLUSIONS
  The reliability of self-report is questionable among both these groups for smoking as well as smokeless tobacco products.
authors: Department of Psychiatry and De-addiction, Lady Hardinge Medical College and Smt. Sucheta Kriplani Hospital, New Delhi, India.
authors: Yatan Pal Singh
authors: YP
authors: Balhara
authors: Raka
authors: R
authors: Jain
authors: Shyam A
authors: SA
authors: Sundar
authors: Rajesh
authors: R
authors: Sagar