Table 3.
GEE model adjusted percentages in awareness of smoking-related health messages among Canadian smokers, 2002-2013
| Added in 2012 | Removed in 2012 | Continuously displayed |
||||
|---|---|---|---|---|---|---|
| Median survey date (Wave #) |
Smoking causes blindness (%) |
Smoking causes bladder cancer (%) |
Nicotine causes addiction (%) |
Smoking causes impotence (%) |
Cigarette smoke contains carbon monoxide (%) |
Smoking causes stroke (%) |
|
Nov 2002 (Wave 1) |
N/A | N/A | N/A | 60.7 (57.8-63.5) |
90.9 (89.1-92.4) |
84.6 (82.4-86.6) |
|
Jun 2003 (Wave 2) |
N/A | N/A | N/A | 59.7 (56.8-62.4) |
90.8 (89.1-92.2) |
84.3 (82.0-86.3) |
|
Jul 2004 (Wave 3) |
11.7 (10.0-13.5) |
N/A | N/A | 61.3 (58.6-62.4) |
92.8 (91.3-94.0) |
86.6 (84.6-88.3) |
|
Nov 2005 (Wave 4) |
15.1 (13.2-17.2) |
N/A | N/A | 63.5 (61.0-66.0) |
90.3 (88.6-91.7) |
87.1 (85.2-88.8) |
|
Nov 2006 (Wave 5) |
16.0 (14.1-18.1) |
N/A | N/A | 65.7 (63.2-68.2) |
91.2 (89.4-92.6) |
86.9 (85.0-88.6) |
|
Dec 2007 (Wave 6) |
18.5 (16.4-20.8) |
N/A | 90.1 (88.2-91.7) |
67.5 (65.0-69.9) |
N/A | 87.6 (85.6-89.3) |
|
Jan 2009 (Wave 7) |
15.9 (13.9-18.1) |
N/A | 89.0 (86.9-90.8) |
66.2 (63.3-68.9) |
N/A | 87.3 (85.2-89.1) |
|
Aug 2010 (Wave 8) |
14.7 (12.5-17.1) |
26.8 (23.7-30.1) |
90.6 (88.2-92.5) |
67.8 (64.3-71.1) |
92.4 (90.1-94.2) |
87.5 (84.7-89.8) |
| May 2012 | Revision of Warning Labels | |||||
|
Oct 2013 (Wave 9) |
36.7*† (32.6-40.9) |
44.0* (40.4-47.5) |
89.6 (86.9-91.8) |
66.2† (62.3-69.9) |
86.7*† (83.7-89.2) |
88.7 (86.1-90.8) |
Percentages are weighted
*
Significant increase (p<0.05) from 2010 to 2013 (GEE contrast of the means)
†
Significant difference (p<0.05) in slopes before and after 2012 HWL revisions (segmented regression analysis)