Thursday, 23 March 2017

1.45 million smokers are still missing

2015 smoking data  from the Canadian Community Health Survey are now available

On March 22, Statistics Canada published new smoking data from the Canadian Community Health Survey (CCHS2) for the year 2015. This is the second federal government survey to provide estimates of smoking -- a little over 4 months ago, the 2015 results of the Canadian Tobacco, Alcohol and Drugs Survey (CTADS) were made public.

As we reported in a blog post last November, the gap between these two surveys keeps growing. The (larger) CCHS survey produces an estimate of the number of Canadian smokers which is 38% bigger than that of CTADS -- some 1.45 missing smokers.

Does this matter? Perhaps not at an operational level. Either number justifies the need for effective and sustained interventions on the part of government, communities, families and individuals.

But in evaluating success, the surveys leave very somewhat different impressions. According to CTUMS/CTADS, there was a 23% reduction in the number of smokers between 2005 and 2015, and a 31% reduction in smoking prevalence. The CCHS data* show a 10% drop in the number of smokers an 18% drop in prevalence. Progress by either count -- but much less so by one than the other.





CTUMS/CTADS
CCHS
Difference
Smokers #
%
Smokers
%
Smokers
%
1999
6,121,992
25




2000
6,007,562
24




2001
5,411,822
22
6,677,856
26
1,266,034
123%
2002
5,414,335
21




2003
5,332,326
21
6,080,504
23
748,178
114%
2004
5,116,200
20




2005
4,966,600
19
5,874,689
22
908,089
118%
2006
4,934,022
19




2007
5,176,302
19
6,112,442
22
936,140
119%
2008
4,880,488
18
6,009,311
21
1,128,823
123%
2009
4,851,274
18
5,730,321
20
879,047
118%
2010
4,701,868
17
5,967,259
21
1,265,391
127%
2011
4,910,520
17
5,764,843
20
854,323
117%
2012
4,629,987
16
5,933,095
20
1,303,108
128%
2013
4,233,300
14.6
5,722,635
19
1,489,335
135%
2014


5,400,000
18


2015
3,846,800
13
5,300,000
17.7
1,453,200
138%


* The 2001 and 2015 CCHS survey used somewhat different methods, and Statistics Canada does not compare them with results from 2003 to 2014. Another complexity in the search for estimates.