Table III. Smoking Behavior Among Very Lighta and 6+ CPD Current Smokers.
| Behavior | 2007-2008 NHANES | 2009 CHIS | ||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| Total (n = 286), No. (%) or Mean (SE) | Very Lighta (n = 158), No. (%) or Mean (SE) | 6+ CPD (n = 128), No. (%) or Mean (SE) | Total (n = 852), No. (%) or Mean (SE) | Very Lighta (n = 501), No. (%) or Mean (SE) | 6+ CPD (n = 351), No. (%) or Mean (SE) | |
| Mean age started smoking (years) | 17.6 (0.45) | 18.4 (0.45) | 16.7 (0.60) | -- -- | -- -- | -- -- |
| Mean years smoked (years) | -- -- | -- -- | -- -- | 13.7 (0.73) | 10.3 (0.85) | 19.4 (1.36)*** |
| In the past 30 days, | ||||||
| Days smoked | 22.3 (0.67) | 18.6 (0.78) | 27.7 (0.58)*** | -- -- | -- -- | -- -- |
| In the last 5 days, | ||||||
| Used tobacco/nicotine | 230 (92) | 119 (88) | 111 (98)* | -- -- | -- -- | -- -- |
| Last smoked cigarettes today | 148 (63) | 58 (48) | 90 (80)** | -- -- | -- -- | -- -- |
| Smoke every day or some days | ||||||
| Every day | 206 (70) | 87 (54) | 119 (91)*** | 479 (51) | 173 (31) | 306 (85)*** |
| Some days | 80 (30) | 71 (46) | 9 (9) | 373 (49) | 328 (69) | 45 (15) |
| Time after waking to smoke | ||||||
| ≤5 minutes | 37 (19) | 7 (10) | 30 (26)*** | -- -- | -- -- | -- -- |
| 6 to 30 minutes | 43 (20) | 14 (16) | 29 (23) | -- -- | -- -- | -- -- |
| 30 minutes to 1 hour | 44 (21) | 15 (17) | 29 (24) | -- -- | -- -- | -- -- |
| >1 hour | 75 (40) | 45 (57) | 30 (28) | -- -- | -- -- | -- -- |
CHIS, California Health Interview Survey; CPD, cigarettes per day; NHANES, National Health and Nutrition Examination Survey; SE, standard error.
a
Very light smokers were defined as those who smoked 1-5 CPD.
*
p<0.05;
**
p<0.01;
***
p<0.001, statistical significance by smoking level.