The Reach Ratio--A New Indicator for Comparing Quitline Reach Into Smoking Subgroups.
Wednesday, March 12, 2014
Posted by: Natalia Gromov
Nicotine Tob Res. 2014 Jan
30. [Epub ahead of print]
The Reach Ratio--A New
Indicator for Comparing Quitline Reach Into Smoking Subgroups.
Campbell HS, Baskerville NB,
Hayward LM, Brown KS, Ossip DJ.
There is growing concern about population disparities in tobacco related
morbidity and mortality. This paper introduces the reach ratio as a
complementary measure to reach for monitoring whether quitline interventions
are reaching high risk groups of smokers proportionate to their prevalence in
the population. METHODS: Data on smokers were collected at intake by 7 Canadian
provincial quitlines from 2007 to 2009 and grouped to identify 4 high risk
subgroups: males, young adults, heavy smokers, and those with low education.
Provincial data are from the Canadian Tobacco Use Monitoring Survey. Reach
ratios (ReRas), defined as the proportion of quitline callers from a subgroup
divided by the proportion of the smoking population in the subgroup, and 95%
confidence intervals were calculated for the subgroups. A ReRa of 1.0 indicates
proportionate representation. RESULTS: ReRas for male smokers and young adults
are consistently less than 1.0 across all provinces, indicating that a lower
proportion of these high risk smokers were receiving evidence-based smoking
cessation treatment from quitlines. Those with high levels of tobacco addiction
and less than high school education have ReRas greater than 1.0, indicating
that a greater proportion of these smokers were receiving cessation treatments.
CONCLUSION: ReRas complement other measures of reach and provide a
standardized estimate of the extent to which subgroups of interest are
benefiting from available cessation interventions. This information can help
quitline operators, funders, and policymakers determine the need for
promotional strategies targeted to high risk subgroups, and allocate resources
to meet program and policy objectives.