Table 1 Descriptive statistics of sample
From: Earlier smoking after waking and the risk of asthma: a cross-sectional study using NHANES data
Measure | Smoking within 5 min of waking (N = 1290) | Smoking after 5 min of waking (N = 2791) | p |
|---|---|---|---|
Lifetime asthma | 150, 11.6% | 210, 7.5% | <.001 |
Past-year asthma | 115, 9.0% | 153, 5.5% | <.001 |
Past-year asthma attack | 60, 4.8% | 82, 3.0% | .006 |
Cigarettes per day | 20.0, 1.0–25.0 | 10, 6.0–20.0 | <.001 |
Smoking duration | 29.5, 18.0–40.0 | 28, 15.0–40.0 | .001 |
Age | 46.0, 35.0–56.0 | 46.0, 33.0–59.0 | .969 |
Sex | .753 | ||
Female | 561, 43.5% | 1230, 44.1% | |
Male | 729, 56.5% | 1561, 55.9% | |
Race | <.001 | ||
White | 812, 63.0% | 1541, 55.2% | |
Black | 352, 27.3% | 698, 25.1% | |
Hispanic | 126, 9.8% | 552, 19.8% | |
Depression | 261, 23.5% | 388, 16.0% | <.001 |
Obesity | 371, 30.4% | 817, 30.8% | .843 |
Family history of asthma | 324, 25.8% | 575, 21.1% | .001 |
Secondhand smoking | 895, 92.8% | 1460, 75.9% | <.001 |