Table 2

Effect of Exposure to Secondhand Smoke on Systemic Nitrotyrosine Levels

Nitrotyrosine Level (nmol/l)Control (n = 11)Lowest Dose (n = 11)Low Dose (n = 11)p Value
Baseline14 (13–19)12.5 (10–15)12 (12–20)<0.54
Immediately after exposure15 (13–17)12.5 (11–14)13 (12–23)<0.47
2 h after exposure17.5 (13–22)17 (12–48)14 (12–21)<0.63
4 h after exposure21 (13–35)18.5 (12–27)17.5 (12–22)<0.80

Values are median (interquartile range). Nitrotyrosine values were not normally distributed, so they were analyzed using Kruskal-Wallis 1-way analysis of variance on ranks.