Publication - Statistics publication

Table 5.6 Self-reported cotinine validated non-smokers exposure to second-hand smoke, 2003 to 2016/2017 combined

Self-reported non-smokers aged 16 and over with valid saliva cotinine measurementa 2003 - 2016/2017 combined
Saliva cotinine level (ng/ml) 2003 2008/ 2009 combined 2010/ 2011 combined 2012/ 2013 combined 2014/ 2015 combined 2016/ 2017 combined
% % % % % %
Men
Geometric mean saliva cotinineb 0.44 0.11 0.11 0.09 0.09 0.08
Confidence interval (0.40-0.47) (0.10-0.13) (0.10-0.13) (0.08-0.10) (0.08-0.11) (0.07-0.09)
Exposed to cotininec 86 39 38 26 28 25
Women
Geometric mean saliva cotinineb 0.37 0.10 0.11 0.08 0.08 0.08
Confidence interval (0.34-0.40) (0.09-0.11) (0.10-0.12) (0.07-0.08) (0.07-0.09) (0.07-0.09)
Exposed to cotininec 84 37 37 23 25 23
All adults
Geometric mean saliva cotinineb 0.40 0.11 0.11 0.08 0.09 0.08
Confidence interval (0.38-0.43) (0.10-0.12) (0.10-0.12) (0.08-0.09) (0.08-0.09) (0.07-0.09)
Exposed to cotininec 85 38 38 25 26 24
Bases (weighted):
Men 1513 681 642 708 700 527
Women 1583 694 700 755 755 626
All adults 3096 1462 1342 1463 1455 1153
Bases (unweighted):
Men 1472 632 598 659 636 487
Women 1746 767 781 824 841 706
All adults 3218 1493 1379 1483 1477 1193

a To be included within this category, participants had to be both self-reported non-smokers and have a saliva cotinine level lower than 12ng/ml.
b Geometric means have been presented for non-smokers as their cotinine data have a very skewed and exponential distribution. A geometric mean is an average calculated by multiplying the values of the cases in the sample and taking the nth root, where n is the number of cases. As 95% confidence intervals for the geometric means are more complicated to calculate than for arithmetic means, these have been presented around the estimates rather than standard errors
c Non-smokers with a detectable level of cotinine in their saliva (> 0.1ng/ml).


Contact

Julie.Landsberg@gov.scot