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Tob Induc Dis. 2017 Jan 17;15:4. doi: 10.1186/s12971-017-0112-4. eCollection 2017.

Development of a scale assessing Beliefs About ThirdHand Smoke (BATHS).

Tobacco induced diseases

Regine Haardörfer, Carla J Berg, Cam Escoffery, Łucja T Bundy, Melbourne Hovell, Michelle C Kegler

Affiliations

  1. Department of Behavioral Sciences and Health Education, Rollins School of Public Health, Emory University, 1518 Clifton Rd NE, Atlanta, GA 30322 USA.
  2. Center for Behavioral Epidemiology and Community Health, Graduate School of Public Health, San Diego State University, 9245 Sky Park Court, San Diego, CA 92182 USA.

PMID: 28104999 PMCID: PMC5240270 DOI: 10.1186/s12971-017-0112-4

Abstract

BACKGROUND: Similarly to secondhand smoke (SHS), thirdhand smoke (THS) beliefs may be correlated with smoking behaviors and smokefree policies in the home. Thus, there is a need to develop and validate measures to assess beliefs about THS.

METHODS: A list of 19 items related to THS were generated by an expert panel and tested in a pilot study. Based on results from an exploratory factor analysis, two factors emerged: THS persistence in the environment and THS impact on health. The scale was reduced to nine items, which showed no differential item functioning by smoking status or smoking ban status in the home. The nine items and the two factor structure were tested in a validation sample from a smoke-free homes intervention that included THS educational materials.

RESULTS: The 9-item scale showed excellent internal consistency. Confirmatory factor analysis indicated good model fit for the two factor solution in a low-income population. Tests of construct validity indicated differences due to exposure to the smoke-free homes intervention, by smoking status, whether participants own or rent their home, and smoking ban status in the home.

CONCLUSIONS: The BATHS scale offers researchers a valid and reliable tool to assess THS beliefs.

Keywords: Scale development; Secondhand/environmental exposure; Thirdhand smoke

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