Updated Prevalences of Asthma, Allergy, and Airway Symptoms, and a Systematic Review of Trends over Time for Childhood Asthma in Shanghai, China

Huang, Chen; Liu, Wei; Hu, Yu; Zou, Zhijun; Zhao, Zhuohui; Shen, Li; Weschler, Louise B.; Sundell, Jan

doi:10.1371/journal.pone.0121577

Cited by 104 publications

(92 citation statements)

References 43 publications

(91 reference statements)

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“…In our study the prevalence of wheezing in boys was more than girls (13.65% vs. 4.38%). This fi nding is consistent with results of more extended studies [15,16].…”

Section: Discussionsupporting

confidence: 92%

Asthma and Environmental Factors in Children

Mirzadeh

Kooshesh

Mehrara

2016

Acta Medica Bulgarica

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Summary. Asthma is one of the most prevalent atopic diseases in childhood. It is characterized by infl ammation of conductive airways and bronchial hyperresponsiveness. Environmental factors introduced to child in early years of life may have a protective or harmful role in developing atopic diseases. To evaluate the infl uence of some environmental factors such as cat or dog ownership, smoking of mother or father and environmental pollution on prevalence of wheezing in children. Subjects and methods: This was a cross sectional retrospective study. A questionnaire was designed based on International Study of Asthma and Allergies in Childhood (ISAAC). Parents of the subjects were asked to fi ll in the questionnaires. Children's wheezing association with keeping cats and dogs, smoking mother and father and frequency of truck passing in place of residence was investigated. 545 children were recruited in our study. Prevalence of wheezing was 9%. Keeping cats in fi rst year of life and last year was associated with less wheezing. But the latter association was not statistically signifi cant. Keeping dogs was so scarce in area of our study, so we could not perform a rightful analysis. Frequency of truck passing was signifi cantly higher in those with wheezing. Keeping cats in fi rst year of life was a signifi cant protective factor, whereas residence in an area with frequent truck passing increased wheezing in children. Results of our study can emphasize the need to keep children away from polluted areas. Further studies are needed to investigate whether keeping a pet in household can benefi t children regarding all possible concerns and benefi ts.

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“…In our study the prevalence of wheezing in boys was more than girls (13.65% vs. 4.38%). This fi nding is consistent with results of more extended studies [15,16].…”

Section: Discussionsupporting

confidence: 92%

Asthma and Environmental Factors in Children

Mirzadeh

Kooshesh

Mehrara

2016

Acta Medica Bulgarica

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“…The distribution of these kindergartens is displayed as Fig. 1 [42]. The CCHH study was approved by the ethical committee of the School of Public Health, Fudan University in Shanghai, China.…”

Section: Methodsmentioning

confidence: 99%

Home dampness-related exposures increase the risk of common colds among preschool children in Shanghai, China: Modified by household ventilation

Sun

Huang

Zou

et al. 2017

Building and Environment

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a b s t r a c tFew studies have estimated the effects of dampness-related exposures and its interaction effects with poor household ventilation on common colds of preschool children. During April 2011eApril 2012, we conducted a cross-sectional survey on home environment and childhood health and collected 13,335 parents-reported questionnaires of 4e6 year-old children in Shanghai, China. In this paper, we investigated associations between the incidence and duration of common colds among these children during the past 12 months before the survey and frequency of opening windows, as well as household dampness-related exposures (indicated by six dampness indicators). Significantly higher incidence (!3 times) and longer duration (!2 weeks) of common cold were found among children with than without these dampness exposures (p-value <0.01 for mold spots and p-value <0.001 for all other indicators). The number of dampness-related indicators had a positive and strong dose-response relationship with common colds (p-trend <0.01). Low frequency of ventilation was also a risk factor for children common colds. After adjusted for the potential confounders in the multiple logistic regression analyses, all dampness-related indicators were significantly associated with the increased odds of common colds and the highest odds ratios was 1.21 (95% CI: 1.16e1.27). We also found that dampness-related exposures and household ventilation habits (p-value for interaction <0.001) had a strong interaction effect on the incidence and duration of common cold. The stratified analysis of ventilation condition displays that the influence of dampness-related exposures has been modified by ventilation. Therefore, good household ventilation habits may have an effect of modification for dampness-related exposures.

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“…8,45 Increasing prevalence of childhood eczema has also been reported in a study of childhood asthma, allergy, and airway symptoms, in Shanghai, China. 35 During the last 20 years, the prevalence of childhood eczema greatly increased not only in Asia, 22 46 In the present study, differences were observed among different age groups. Younger children had higher prevalences of eczema than older children, and the prevalence decreased from 23.8% among children aged three to 21.7% among children aged six (P < .05).…”

Section: Discussionmentioning

confidence: 41%

“…The related diseases or symptoms of children covered asthma, pneumonia, rhinitis, and eczema. For the dampness-related exposure, we used Dampness in Buildings and Health (DBH) study 35…”

Section: Practical Implicationsmentioning

confidence: 99%

High prevalence of eczema among preschool children related to home renovation in China: A multi‐city‐based cross‐sectional study

et al. 2019

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We surveyed 40 010 three-to six-year-old children in seven Chinese cities (Beijing, Taiyuan, Urumqi, Shanghai, Nanjing, Changsha, and Chongqing) during 2010-2012 so as to investigate possible links between home renovation and childhood eczema. Their parents responded to questions on home renovation and childhood eczema. Multivariate and two-level (city-child) logistic regression analyses yielding odds ratios with 95% confidence intervals were performed.Sensitivity analyses stratifying data for region, climate, and income level were also performed. The prevalences of childhood eczema in children with different floor and wall covering materials were significantly different and were significantly higher with home renovation during early lifetime. Exposure to synthetic materials significantly increased the risk of childhood eczema by 20%-25%. The risks (AOR, 95% CI) of current eczema among children in families with solid wood flooring and oil paint wall covering were 1.25 (1.04-1.49) and 1.35 (1.14-1.60), respectively. Home renovation during pregnancy was related to children's lifetime and current eczema. K E Y W O R D S building materials, childhood eczema, China, home renovation, renovation periods | 749 SUN et al.

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Updated Prevalences of Asthma, Allergy, and Airway Symptoms, and a Systematic Review of Trends over Time for Childhood Asthma in Shanghai, China

Cited by 104 publications

References 43 publications

Asthma and Environmental Factors in Children

Asthma and Environmental Factors in Children

Home dampness-related exposures increase the risk of common colds among preschool children in Shanghai, China: Modified by household ventilation

High prevalence of eczema among preschool children related to home renovation in China: A multi‐city‐based cross‐sectional study

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