3 years ago

Household cleaning products and the risk of allergic dermatitis: A prospective cohort study with primary-school children

Albert Lee, Arthur P.S. Lau, Xiang Qian Lao, Cui Guo, Zilong Zhang, Xudong Liu, Claudie Chiu-Yi Wong, Kin Fai Ho, Eng Kiong Yeoh, Lixing Tan, Ignatius T.S. Yu
Background Household cleaning products are widely used by the public, but limited data have been obtained on whether their use induces allergic dermatitis in children. Objective This study investigated the association between exposure to household cleaning products and allergic dermatitis in primary-school children. Methods A prospective cohort study of Hong Kong primary-school children was conducted between 2012 and 2014. A baseline survey was administered to 1,812 students who did not have allergic dermatitis. Information on respiratory symptoms, exposure to household chemical cleaning products and other topics was collected using a self-designed questionnaire. A cumulative chemical burden (CCB) score was calculated for each student by summing the duration of exposure to 14 chemical cleaning products. Principal component analysis was used to identify patterns in the use of these cleaning products. Logistic regression was performed to calculate relative risk (RR) with 95% confidence intervals (CIs) after adjusting for potential confounders. Results Eighty-nine (4.9%) of the students surveyed had dermatitis during the follow-up. However, exposure to individual chemical cleaning products was not found to be associated with the children's allergic dermatitis (all P > 0.05). In contrast to those in the lowest tertile, neither CCB scores in the middle tertile (RR: 1.16, 95% CI: 0.67 to 2.00) nor those in the highest tertile (RR: 1.24, 95% CI: 0.73 to 2.14) were significantly associated with the risk of allergic dermatitis. The adjusted RR for every 5-unit increment in CCB score was 1.01 (95% CI: 0.98 to 1.03). Four patterns of cleaning-product use were derived, but none were found to be associated with the risk of dermatitis (all P > 0.05). Conclusion The use of household chemical cleaning products is not associated with the risk of dermatitis in primary-school children. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1111/jdv.14680

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