Household environmental @entity286 smoke (ETS) exposure accounts for substantial morbidity among young @entity1 , but the ETS-associated morbidity burden among school-age @entity1 is less well defined. Illness-related school absenteeism is a measure of a broad spectrum of adverse effects of ETS exposure in school-age @entity1 . The authors investigated the relations between ETS exposure, @entity565 status, and illness-related school absenteeism in a cohort of 1,932 fourth-grade schoolchildren from 12 southern California communities during January-June 1996. Incidence rates and adjusted relative risks of illness-related absences were determined by using an active surveillance system. The effects of ETS exposure on absenteeism were assessed by using stratified incidence rates and Poisson regression to adjust for sociodemographic factors. ETS exposure was associated with an increased risk of respiratory-illness-related school absences (relative risk (RR) = 1.27, 95% confidence interval (CI): 1.04, 1.56). @entity1 living in a household with two or more smokers were at increased risk of such absences (RR = 1.75, 95% CI: 1.33, 2.30). @entity1 's @entity565 status affected their response to ETS. Compared with unexposed @entity1 without @entity565 , @entity1 with @entity565 were at increased risk of respiratory-illness-related school absences when exposed to one (RR = 2.35, 95% CI: 1.49, 3.71) or two or more (RR = 4.45, 95% CI: 2.80, 7.07) household smokers. @entity1 without @entity565 also had an increased risk if exposed to two or more smokers (RR = 1.44, 95% CI: 1.04, 2.00). Therefore, ETS exposure is associated with increased respiratory-related school absenteeism among @entity1 , especially those with @entity565 .

Environmental XXXX smoke and absenteeism related to respiratory illness in schoolchildren.

@entity1 :: ('9606', 'Species') :: ['Children', 'children'] @entity286 :: ('4097', 'Species') :: ['tobacco'] @entity565 :: ('MESH:D001249', 'Disease') :: ['asthma']
@entity286 :: (4097,Species) :: ['tobacco']
