TABLE 4.
Group effects on IL-6 outcomes after a laboratory stressor (natural log transformed).
| Covariate-adjusted least squares mean (SE) | |||||
|---|---|---|---|---|---|
| Time post- stressor |
Never Smokers (N=64) |
Former Smokers (N=25) |
Group difference |
95% CI | P-value |
| 45 minutes | 0.59 (0.06) | 0.49 (0.08) | −0.10 (0.09) | −0.28 to 0.08 | 0.25 |
| 120 minutes | 0.76 (0.07) | 0.95 (0.10) | 0.19 (0.12) | −0.05 to 0.43 | 0.13 |
| Changea | 0.17 (0.06) | 0.46 (0.09) | 0.29 (0.10) | 0.07 to 0.51 | 0.01 |
IL-6 = Interleukin-6; SE = standard error; CI = confidence interval
Note: All outcomes are natural log-transformed. Least square means are adjusted on baseline value, age, BMI, time from treatment to visit, education and usage of antidepressants.
a
Change is from 45 minutes post-stress to 120 minutes post-stress.