Using Salivary Cotinine to Validate Self-reports of Tobacco Use by Indian Youth Living in Low-income Neighborhoods

Overview

Journal Asian Pac J Cancer Prev

Specialty Oncology

Date 2012 Feb 11

PMID 22320954

Citations 13

Authors

Poonam Dhavan

Shalini Bassi

Melissa H Stigler

Monika Arora

Vinay K Gupta

Cheryl L Perry

Lakshmy Ramakrishnan

K Srinath Reddy

Affiliations

Soon will be listed here.

Abstract

Background: Self-reported tobacco use among young people can underestimate the actual prevalence of tobacco use. Biochemical validation of self-reports is particularly recommended for intervention studies where cessation outcomes are to be measured. Literature on biochemical validation of self-reports of multiple forms of tobacco use in India is sparse, particularly among young people.

Methods: The study was conducted during the baseline household survey of a community-based tobacco prevention and cessation intervention trial for youth (10-19 years old) residing in slum communities in Delhi, India in 2009. Salivary cotinine measurement on 1,224 samples showed that youth were under-reporting use of chewing and smoking tobacco.

Results: Self-reports had a low sensitivity (36.3%) and a positive predictive value of 72.6%. No statistically significant difference in under- reporting was found between youth in the control and intervention conditions of the trial, which will be taken into consideration in assessing intervention outcomes at a later time point.

Conclusion: Biochemical validation of self-reported tobacco use should be considered during prevention and cessation studies among youth living in low-income settings in developing countries like India.

Impact: The future results of biochemical validation from Project ACTIVITY (Advancing Cessation of Tobacco in Vulnerable Indian Tobacco Consuming Youth) will be useful to design validation studies in resource-poor settings.

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