The reliability and predictive validity of the Heaviness of Smoking Index and its two components: findings from the International Tobacco Control Four Country study.

Borland, R; Yong, H-H; J O'Connor, R; Hyland, A; E Thompson, M

doi:10.1093/ntr/ntq038

Public

The reliability and predictive validity of the Heaviness of Smoking Index and its two components: findings from the International Tobacco Control Four Country study.

Shared by NobleBlocks on Oct 1, 2010 • 12:00 AM UTC

Authors:

R Borland

H-H Yong

R J O'Connor

Abstract

BACKGROUND: There is increasing recognition that the two measures in the Heaviness of Smoking Index (HSI), time to first cigarette of the day (TTFC) and daily consumption (cigarettes per day [CPD]), are strong predictors of quitting behavior. METHODS: Use of Waves 1-4 of International Tobacco Contro...

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