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| A study on the effect of different family tobacco control patterns on cotinine level and acute respiratory infections among infants |
| LIN Chu-jun, XU Wu-xiu, XU Wu-min, ZHANG Feng-fei
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| Department of Pediatrics, the 2nd Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027, China |
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Abstract Objective To explore the effect of differentfamily tobacco controlpatterns on cotinine level and acute respiratory infections amonginfants.Methods A total of 300 infants were included, and were divided into 3 groups based on the tobacco control patterns: strictlytobacco-controlled group(97 cases), partlytobacco-controlledgroup(88 cases) and tobacco-uncontrolled group(115 cases).Urinary cotinine was measured in all participants. All participants were prospectively followed-up for 1 year, and the incidence of acute respiratory infections was recorded during the follow-up. Results The cotinine level of strictly tobacco-controlled group [0.45±0.21(μg/L)] was significantly lower than the other two groups[1.01±0.49(μg/L), 1.16±0.48(μg/L),P<0.05], and no significant differences were detected between the partly tobacco-controlled group and tobacco-uncontrolled group. The incidence of lower respiratory tract infection, not the upper respiratory tract infections, was significant different among the 3 groups (strictlytobacco-controlled group: 18.75%; partlytobacco-controlledgroup: 32.18%; tobacco-uncontrolled group: 37.72%)(P＜0.05). The number of upper respiratory tract infections and lower respiratory tract infections was significantly different among the three groups. The difference was significant between strictly tobacco-controlled group and partly tobacco-controlled groupand between strictly tobacco-controlled group and tobacco-uncontrolled group (P<0.05). Conclusion Strict tobaccocontrol could reduce the prevalence of passive smoking and the incidence of respiratory infections amonginfants.
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Received: 29 December 2015
Published: 20 December 2017
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