Table 2.
Years | Exposure to ETS among coughing dogs (%) |
Exposure to ETS among control dogs (%) |
Smoking prevalence in NC (%)a |
P value coughing vs control dogs |
P value coughing dogs vs smoking prevalence |
P value control dogs vs smoking prevalence |
---|---|---|---|---|---|---|
2000–2009 | 47/114 (41.2) | 26/109 (23.9) | 23.9 | nd | 0.004 | 0.99 |
2000–2004 | 28/55 (50.9) | nd | 25.3 | nd | <0.001 | nd |
2005–2009 | 19/59 (32.2) | 26/109 (23.9) | 22.2 | 0.243 | 0.060 | 0.68 |
nd, not determined;
Through 2008. From: CDC. State-specific prevalence and trends in adult cigarette smoking-United States, 2998–2007. MMWR 2009;58:221–226 and CDC. State-specific secondhand smoke exposure and current cigarette smoking among adults-United States, 2008. MMWR 2009;58:1232–1235.