Table 2

 Prevalence and intensity of directly measured SHS exposure among 189 non-smoking adults with asthma during the previous 7 days: personal nicotine badge analysis

ConditionPrevalenceNicotine concentration (μg/m3) among those with any exposure
Minimum25th percentileMedian75th percentileMaximum
p = 0.044 for comparison of prevalence in ICU v hospital only group (likelihood ratio χ2 test).
p = 0.027 for comparison of nicotine concentration in ICU v hospital only group (Kruskal-Wallis test).
ICU (n = 30)26 (87%)
Hospital only (n = 159)111 (70%)
Total (n = 189)137 (72%)