A method comparison study of timeline followback and ecological momentary assessment of daily cigarette consumption.

ABSTRACT:

Introduction

Uncertainty exists about how best to measure daily cigarette consumption. Two common measures are timeline followback (TLFB), which involves structured, prompted recall, and ecological momentary assessment (EMA), which involves recording consumption, as it occurs, on a handheld electronic device.

Methods

We evaluated the agreement between TLFB and EMA measures collected for 14 days prior to the target quit date from 236 smokers in a smoking cessation program. We performed a Bland-Altman analysis to assess agreement of TLFB and EMA using a regression-based model that allows for a nonuniform difference between methods and limits of agreement that can vary with the number of cigarettes smoked.

Results

For pairs of measurements taken on the same smoker, TLFB

SUBMITTER: Griffith SD 

PROVIDER: S-EPMC2762933 | biostudies-literature | 2009 Nov

REPOSITORIES: biostudies-literature