|Association between SHS exposure and respiratory symptoms among 1,562 non-smoking workers a|
|SHS exposure||Chronic cough||Chronic phlegm||Any wheeze|
|OR||95% CI||OR||95% CI||OR||95% CI|
|Total recent exposureb|
|Exposed to SHS in past 7 days||1.46||1.00 - 2.13||1.55||1.08 - 2.21||1.76||1.41 - 2.21|
|Current exposure by locationb,c|
|Recent workplace exposured||1.74||1.14 - 2.67||1.75||1.16 - 2.65||1.20||0.90 - 1.60|
|Recent home exposuree||0.74||0.37 - 1.48||0.76||0.41 - 1.42||0.90||0.60 - 1.35|
|Recent recreational exposuref||0.91||0.55 - 1.50||1.24||0.74 - 2.09||2.03||1.45 - 2.83|
|Lived with ≥1 smoker during childhood||1.21||0.81 - 1.80||1.84||1.24 - 2.75||1.16||0.91 - 1.47|
|Life-time home exposure|
|Less than 10 years||Ref||--||Ref||--||Ref||--|
|10-19 years||1.39||0.84 - 2.31||1.86||1.15 - 3.03||1.21||0.90 - 1.63|
|20-29 years||1.75||1.04 - 2.94||1.92||1.16 - 3.18||1.17||0.85 - 1.60|
|at least 30 years||1.35||0.79 - 2.32||1.91||1.15 - 3.17||1.30||0.94 - 1.79|
|p trend = 0.29||p trend = 0.02||p trend = 0.12|
a Logistic regression models adjusted for age, sex, race, job title, former smoking, pack-years, years since quitting, BMI, region of country, and urban residence among never smokers or former smokers who quit at least 10 years before completing the questionnaire.
b Additionally adjusted for childhood exposure to SHS.
c Location specific exposures were all modeled simultaneously.
d Exposure at work in the past 2 work days.
e Recent exposure at home in an average week.
f Recent exposure outside of home and work in an average week.
Note: trend analyses are estimated using the median value of each category.
Laden et al.
Laden et al. BMC Public Health 2013 13:93 doi:10.1186/1471-2458-13-93