||Passive Smoking and Height Growth of Preadolescent Children.
Berkey, C. S. ;
Ware, J. H. ;
Speizer, F. E. ;
Ferris, B. G. ;
||Harvard School of Public Health, Boston, MA.;Health Effects Research Lab., Research Triangle Park, NC.
||Some EPA libraries have a fiche copy filed under the call number shown.
The attained height and height growth of 9273 children participating in a longitudinal study of the health effects of air pollutants were analyzed to assess the association between passive exposure to cigarette smoke and physical growth between 6 and 11 years of age. Children were measured annually for 2 to 6 years. Each height measurement was adjusted for sex and age by the NCHS anthropometric standards. Each child's adjusted heights were then re-expressed as level of attained height and growth rate. Attained height exhibited a dose response relationship with amount of current maternal cigarette smoking (p<0.001). Children whose mothers smoked ten or more cigarettes daily were approximately 0.65 cm shorter than children of non-smokers, while children whose mothers smoked between 1 and 9 cigarettes per day were 0.45 cm shorter. However, passive smoking was not correlated with the child's grown rate.