1
|
Liu W, Cai J, Sun C, Zou Z, Zhang J, Huang C. Time-trends for eczema prevalences among children and adults from 1985 to 2015 in China: a systematic review. BMC Public Health 2022; 22:1294. [PMID: 35790959 PMCID: PMC9254617 DOI: 10.1186/s12889-022-13650-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/06/2022] [Indexed: 04/11/2023] Open
Abstract
Abstract
Background
Several studies have reported that childhood prevalence of eczema has been increasing worldwide. However, none study quantitatively evaluated prevalence trends of eczema among children and adults in the last 30 years in China.
Methods and Findings
Via a systematic review of literature databases in English and Chinese, we summarized all studies reporting eczema prevalences from 1985 to 2015 in China as well as diagramed prevalence and eczematous population trends against year for different age groups. A total of 93 studies and 17 studies (16 for children and one for adults) were selected for qualitative and quantitative synthesis, respectively. Childhood lifetime-ever eczema prevalences ranged from 10.0% to 30.0%. Prevalences among 3-12-year-olds children showed increasing trends in most specific cities, but national lifetime-ever eczema prevalences among 13-14-year-olds children decreased from 10.6% in 2001 to 8.6% in 2009 in mainland China. We estimated that about 1.5 million children aged 13-14-year-olds in 2009 and 15.5 million children aged 3-6-year-olds in 2012 had lifetime-ever eczema in mainland China. Similar studies were too few to ascertain time-trends of eczema prevalence among adults. About 39.4, 20.0, and 11.6 million adults aged 15-86-year-olds in 2010 had contact dermatitis, seborrheic dermatitis, and atopic dermatitis in the mainland China, respectively.
Conclusions
The burden of eczema became heavier in young children, whereas perhaps had been reduced in adolescent in China. More studies for eczema prevalence in adults are warranted.
Collapse
|
2
|
Jung CC, Lin WY, Hsu NY, Wu CD, Chang HT, Su HJ. Development of Hourly Indoor PM 2.5 Concentration Prediction Model: The Role of Outdoor Air, Ventilation, Building Characteristic, and Human Activity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E5906. [PMID: 32823930 PMCID: PMC7460507 DOI: 10.3390/ijerph17165906] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/04/2020] [Accepted: 08/12/2020] [Indexed: 11/18/2022]
Abstract
Exposure to indoor particulate matter less than 2.5 µm in diameter (PM2.5) is a critical health risk factor. Therefore, measuring indoor PM2.5 concentrations is important for assessing their health risks and further investigating the sources and influential factors. However, installing monitoring instruments to collect indoor PM2.5 data is difficult and expensive. Therefore, several indoor PM2.5 concentration prediction models have been developed. However, these prediction models only assess the daily average PM2.5 concentrations in cold or temperate regions. The factors that influence PM2.5 concentration differ according to climatic conditions. In this study, we developed a prediction model for hourly indoor PM2.5 concentrations in Taiwan (tropical and subtropical region) by using a multiple linear regression model and investigated the impact factor. The sample comprised 93 study cases (1979 measurements) and 25 potential predictor variables. Cross-validation was performed to assess performance. The prediction model explained 74% of the variation, and outdoor PM2.5 concentrations, the difference between indoor and outdoor CO2 levels, building type, building floor level, bed sheet cleaning, bed sheet replacement, and mosquito coil burning were included in the prediction model. Cross-validation explained 75% of variation on average. The results also confirm that the prediction model can be used to estimate indoor PM2.5 concentrations across seasons and areas. In summary, we developed a prediction model of hourly indoor PM2.5 concentrations and suggested that outdoor PM2.5 concentrations, ventilation, building characteristics, and human activities should be considered. Moreover, it is important to consider outdoor air quality while occupants open or close windows or doors for regulating ventilation rate and human activities changing also can reduce indoor PM2.5 concentrations.
Collapse
Affiliation(s)
- Chien-Cheng Jung
- Department of Public Health, China Medical University, Taichung 40402, Taiwan;
| | - Wan-Yi Lin
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70403, Taiwan; (W.-Y.L.); (N.-Y.H.); (H.-T.C.)
| | - Nai-Yun Hsu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70403, Taiwan; (W.-Y.L.); (N.-Y.H.); (H.-T.C.)
| | - Chih-Da Wu
- Department of Geomatics, National Cheng Kung University, Tainan 70403, Taiwan;
- National Institute of Environmental Health Sciences, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Hao-Ting Chang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70403, Taiwan; (W.-Y.L.); (N.-Y.H.); (H.-T.C.)
| | - Huey-Jen Su
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan 70403, Taiwan; (W.-Y.L.); (N.-Y.H.); (H.-T.C.)
| |
Collapse
|
3
|
Hassan AA, Taha Z, Abdulla MA, Ali AA, Adam I. Assessment of Bottle-Feeding Practices in Kassala, Eastern Sudan: A Community-Based Study. Open Access Maced J Med Sci 2019; 7:651-656. [PMID: 30894930 PMCID: PMC6420941 DOI: 10.3889/oamjms.2019.132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The World Health Organization encourages exclusive breastfeeding up to six months and avoidance of bottle-feeding. There are few published research articles on the practice of bottle-feeding and associated factors in Sudan. AIM The study aimed to assess the usage and factors associated with bottle-feeding practices during the first six months of life among mothers with children aged between 6 and 24 months in Kassala, Eastern Sudan. METHODS A community-based cross-sectional study was conducted from July to September 2017. A structured questionnaire was used to collect relevant data from interviewed mothers. RESULTS A total of 242 mother-child pairs participated in the study. The mean (standard deviation) of maternal age and children's age was 27.13 (5.73) years and 12.2 (6.7) months, respectively. From the total, 96/242 (39.7%) used bottle-feeding for their children in the first six months of life. In multivariable analysis, urban residence (Adjusted Odds Ratio [AOR] 1.96, 95% Confidence Interval [CI] (1.06, 3.63), not receiving breastfeeding education (AOR 1.92, 95% CI 1.07, 3.45) and child hospitalization (AOR 1.83, 95% CI 1.02, 3.28) were significantly associated with bottle-feeding. CONCLUSION There was a high usage of bottle-feeding and it was found to be associated with child hospitalisation. To avoid bottle-feeding, urgent actions are required to support and educate mothers regarding breastfeeding with special attention to urban-residence ones.
Collapse
Affiliation(s)
- Ahmed A. Hassan
- Faculty of Medicine, University of Khartoum, Khartoum, Sudan
| | - Zainab Taha
- College of Natural and Health Sciences, Zayed University, Dubai, UAE
| | | | | | - Ishag Adam
- Unaizah College of Medicine, Qassim University, Unaizah, Kingdom of Saudi Arabia
| |
Collapse
|
4
|
Lin Z, Norback D, Wang T, Zhang X, Shi J, Kan H, Zhao Z. The first 2-year home environment in relation to the new onset and remission of asthmatic and allergic symptoms in 4246 preschool children. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 553:204-210. [PMID: 26925732 DOI: 10.1016/j.scitotenv.2016.02.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/05/2016] [Accepted: 02/06/2016] [Indexed: 06/05/2023]
Abstract
The home environment can influence childhood allergies and respiratory health but there is little information on associations between early life exposure at home and new onset and remission of the asthmatic or allergic symptoms in preschool children. A questionnaire survey was performed in a random cluster sample of 4246 preschool children in Urumqi, China. Information on the home environment (perceptions of odors and indicators of pollution sources) and children's health (wheeze, rhinitis and eczema) was collected for the first 2 years of life and the last year (before answering the questionnaire) from one of the parents or another guardian of the child. Associations between the home environment the first 2 years of life and new onset and remission of childhood symptoms were analyzed by multiple logistic regression. Home environment factors reported for the first 2 years of life were consistently positively associated with new onset of symptoms and negatively associated with remission of symptoms. Visible mold (OR 1.46, 95% CI 1.12-1.90), moldy odor (OR 2.15, 95% CI 1.45-3.18), air dryness (OR 1.31, 95% CI 1.08-1.59), stuffy odor (OR 1.25, 95% CI 1.01-1.54) and parental smoking (OR 1.36, 95% CI 1.13-1.65) were associated with new onset of symptoms. These factors were negatively associated with the remission of symptoms. In conclusion, mold contamination at home (moldy odor/visible mold), poor indoor air quality (stuffy odor, air dryness) and exposure to environmental tobacco smoke (ETS) in the first 2 years of life can increase the incidence of asthmatic and allergic symptoms and decrease the remission from these symptoms in preschool children.
Collapse
Affiliation(s)
- Zhijin Lin
- Department of Environmental Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai 200032, PR China
| | - Dan Norback
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala SE-751, Sweden
| | - Tingting Wang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Xinjiang Medical University, Urumqi 830011, PR China
| | - Xin Zhang
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, PR China
| | - Jingjin Shi
- Department of Environmental Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai 200032, PR China
| | - Haidong Kan
- Department of Environmental Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai 200032, PR China
| | - Zhuohui Zhao
- Department of Environmental Health, School of Public Health, Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai 200032, PR China.
| |
Collapse
|
5
|
Home Dampness Signs in Association with Asthma and Allergic Diseases in 4618 Preschool Children in Urumqi, China-The Influence of Ventilation/Cleaning Habits. PLoS One 2015; 10:e0134359. [PMID: 26230849 PMCID: PMC4521786 DOI: 10.1371/journal.pone.0134359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 07/09/2015] [Indexed: 12/20/2022] Open
Abstract
There is an increasing prevalence of childhood asthma and allergic diseases in mainland of China. Few studies investigated the indoor dampness, ventilation and cleaning habits and their interrelationship with childhood asthma and allergic diseases. A large-scale cross-sectional study was performed in preschool children in Urumqi, China. Questionnaire was used to collect information on children’s health, home dampness and ventilation/cleaning (V/C) habits. Multiple logistic regressions were applied to analyze the associations between childhood asthma/allergic diseases and each sign of home dampness, dampness levels, each V/C habit and total V/C scores. The associations between dampness and health were further performed by strata analyses in two groups with low and high V/C scores. Totally 4618(81.7%) of 5650 children returned the questionnaire. Reports on home dampness were most common for water condensation on windows (20.8%) followed by damp beddings (18.0%). The most common ventilation measure was the use of exhaust fan in bathroom (59.3%), followed by daily home cleaning (48.3%), frequently putting beddings to sunshine (29.9%) and frequently opening windows in winter (8.4%). There were positive associations between the 6 signs of home dampness and children’s health particularly the symptoms last 12 months. By comparing with the reference dampness level (dampness scored 0), both the low dampness (scored 1~2) level and the high dampness level (scored 3~6) showed significantly increasing associations with childhood symptoms. There were crude negative associations between V/C habits and childhood health but not significant adjusting for home dampness levels. The risks of home dampness on children’s health were lower in the group with higher V/C score but the differences were not statistically significant. Home dampness is a potential risk factor for childhood asthma and allergic symptoms in preschool children in Urumqi, China. No significant effects were observed for ordinary home ventilation and cleaning habits in reducing the risks of home dampness on childhood asthma and allergic diseases in Urumqi, China.
Collapse
|
6
|
Abstract
AbstractObjectivesFe-deficiency anaemia (IDA) occurs in 1–2 % of infants in developed countries, peaks at 1–3 years of age and is associated with later cognitive deficits. The objectives of the present study were to describe the characteristics of young children with severe IDA and examine modifiable risk factors in a developed-country setting.DesignTwo prospective samples: a national surveillance programme sample and a regional longitudinal study sample.SettingCanada, 2009–2011.SubjectsTwo samples of young children recruited from community-based health-care practices: a national sample with severe anaemia (Hb<80 g/l) due to Fe deficiency and a regional sample with non-anaemic Fe sufficiency.ResultsChildren with severe IDA (n201, mean Hb 55·1 g/l) experienced substantial morbidity (including developmental delay, heart failure, cerebral thrombosis) and health-care utilization (including a 42 % hospitalization rate). Compared with children with Fe sufficiency (n597, mean Hb 122·4 g/l), children with severe IDA consumed a larger volume of cow’s milk daily (median 1065 mlv. 500 ml,P<0·001) and were more likely to be using a bottle during the day (78 %v. 43 %, OR=6·0; 95 % CI 4·0, 8·9) and also in bed (60 %v. 21 %, OR=6·5; 95 % CI 4·4, 9·5).ConclusionsSevere IDA is associated with substantial morbidity and may be preventable. Three potentially modifiable feeding practices are associated with IDA: (i) cow’s milk consumption greater than 500 ml/d; (ii) daytime bottle use beyond 12 months of age; and (iii) bottle use in bed. These feeding practices should be highlighted in future recommendations for public health and primary-care practitioners.
Collapse
|