Jena Pratap Kumar, Kishore Jugal, Pati Sanghamitra, Sarkar Bidyut Kanti, Das Sagarika
Project STEPS, Public Health Foundation of India, New Delhi, and Heath Systems Research India Initiative, Bangalore, India E-mail :
Asian Pac J Cancer Prev. 2014 Jan;14(11):6563-8. doi: 10.7314/apjcp.2013.14.11.6563.
Tobacco use and quit attempts are two key indicators of the Global Adult Tobacco Survey (GATS) that assess quit attempts among current as well as former tobacco users. The relevant data have inherent policy implications for tobacco cessation programme evaluation. This study aimed to review the concepts of quit attempt assessment and quantifying invalid responses considering GATS-India data.
GATS assessment of tobacco use and quit attempts were examined in the current literature. Two categories of invalid responses were identified by stratified analysis of the duration of last quit attempt among current users and duration of abstinence among former users. Category A included absolute invalid responses when time- frame of assessment of current tobacco use and less than former tobacco use were violated. Category B included responses that violated the unit of measurement of time.
Current daily use, current less than daily use and former use in GATS were imprecisely defined with overlapping of time-frame of assessment. Overall responses of 3,102 current smokers, 4,036 current smokeless users, 1,904 former smokers and 1,343 former smokeless users were analyzed to quantify invalid responses. Analysis indicated overall 21.2% (category A: 7.32%; category B: 17.7%) and 22.7% (category A: 8.05%; category B: 18.1%) invalid responses among current smokers and smokeless users respectively regarding their duration of last quit attempt. Similarly overall 6.62% (category A: 4.7%; category B: 2.3%) and 10.6% (category A: 8.6%; category B: 3.5%) invalid responses were identified among former smokers and smokeless users respectively regarding their duration of abstinence.
High invalid responses for a single assessment are due to the imprecise definition of current use, former use and quit attempt; and failure to utilize opportunity of direct data entry interface use during the survey to validate responses instantly. Redefining tobacco use and quit attempts considering an appropriate timeframe would reduce invalid responses.
烟草使用情况和戒烟尝试是全球成人烟草调查（GATS）的两个关键指标，该调查评估当前及以前烟草使用者的戒烟尝试情况。相关数据对戒烟项目评估具有内在的政策意义。本研究旨在结合印度GATS数据，回顾戒烟尝试评估概念及量化无效回答。
在当前文献中对GATS的烟草使用及戒烟尝试评估进行了研究。通过对当前使用者上次戒烟尝试持续时间和以前使用者戒烟持续时间进行分层分析，确定了两类无效回答。A类包括在评估当前烟草使用时间范围以及少于以前烟草使用时间范围时出现的绝对无效回答。B类包括违反时间测量单位的回答。
GATS中当前每日使用、当前非每日使用及以前使用的定义不精确，评估时间范围存在重叠。对3102名当前吸烟者、4036名当前无烟使用者、1904名以前吸烟者和1343名以前无烟使用者的总体回答进行分析以量化无效回答。分析表明，当前吸烟者和无烟使用者在其上次戒烟尝试持续时间方面，总体无效回答分别为21.2%（A类：7.32%；B类：17.7%）和22.7%（A类：8.05%；B类：18.1%）。同样，以前吸烟者和无烟使用者在其戒烟持续时间方面，总体无效回答分别为6.62%（A类：4.7%；B类：2.3%）和10.6%（A类：8.6%；B类：3.5%）。
单次评估中无效回答比例较高，原因在于当前使用、以前使用和戒烟尝试的定义不精确，以及在调查期间未能利用直接数据录入界面的机会即时验证回答。考虑适当的时间范围重新定义烟草使用和戒烟尝试将减少无效回答。
