Exposure to environmental tobacco smoke and respiratory tract infections in pre-school children – a cross-sectional study in Poland
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Department of Family Medicine and Community Nursing, Medical University, Bialystok, Poland
Department of Family Medicine, Medical University, Wroclaw, Poland
Family Medicine Department, Medical University, Warsaw, Poland
Department of Clinical Toxicology and Environmental Disease, Jagiellonian University Collegium Medicum, Cracow, Poland
Department of Pediatric Infectious Diseases, Medical University, Bialystok, Poland
Dorota Bielska   

Department of Family Medicine and Community Nursing, Medical University, Bialystok, Poland
Ann Agric Environ Med. 2015;22(3):524–529
Knowledge of the harmful influence of environmental tobacco smoke (ETS) has a positive impact on changing social behaviours worldwide. In many homes smoking is totally prohibited; in some others, partial limitations of tobacco consumption have been introduced.

To study the correlation between the adopted rules of tobacco use in homes of 3-year-olds, and the kind and frequency of acute respiratory system infections within a 6-month period of attending pre-schools.

Material and Methods:
The study was performed among children attending municipal pre-schools in Białystok, Poland. The data was collected by anonymous questionnaires completed by the parents of 302 children aged 3 years chosen randomly from 1,200 children attending 51 pre-schools. The exposure of children to tobacco smoke was measured by determining cotinine to creatinine ratio (CCR) in urine.

In the 150 families of children who were surveyed, 210 were smokers. Every day, the smokers consisted of fathers (37.3%) and mothers (23.6%). The 3-year-old children were divided into 3 groups according to smoking habits in their homes: 28.5% of the children under examination came from homes where tobacco smoking was forbidden (mean CCR – 15.21ng/mg, SD=11.86), 26.2% came from homes where tobacco was smoked in separate rooms (mean CCR – 65.75 ng/ml, SD=81.51), 45.4% lived in homes where no rules connected with smoking had been established (mean CCR – 61.75 ng/ml, SD= 70.29). During the analyzed period of 6 months, 85% of the children had at least 1 respiratory tract infection (60% – upper, 16.9% – lower, 16.5% – upper and lower, 7.1% – otitis media).

The majority of the 3-year-old children who had lower respiratory tract infections required antibiotics and hospitalization. Living in a home where no tobacco rules were established may cause an increase of respiratory tract infections.

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