ABSTRACT
Objective@#To systematically review the prevalence of iron-deficiency anemia among children aged 0-14 years in China from 2000 to 2020, and to provide a reference for prevention and controlling of IDA among Chinese children.@*Methods@#CNKI, CBM, WanFang Data, VIP databases, PubMed, Embase and Web of Science were electronically searched to collect crosssectional studies on the prevalence of iron deficiency anemia in children aged 0-14 years of China from 2000 to April 2020. Two reviewers independently conducted literature screening, methodological evaluation and data extraction, and used Stata 13.0 software to combine the data to estimate the prevalence. The Q test and I 2 statistics were used to evaluate the heterogeneity of studies. Begg and Egger test were used to evaluater.@*Results@#A total of 60 articles were included, including 122 771 children, among whom 28 693 were sick. Meta-analysis results showed that the total prevalence rate of children aged 0-14 years in China from 2000 to 2020 was 19.9%. The prevalence rate of girls (18.7%) was higher than that of boys (16.9%), and the difference was statistically significant(P<0.05). The prevalence rate was highest in infancy(30.3%), followed by in early childhood(16.7%). From 2006 to 2010, the prevalence rate of children was the highest(22.6%). In recent years, the prevalence rate of children with iron deficiency anemia was lower than before. Mild anemia was found in 88.7% of the children, and moderate or severe anemia was found in 11.3% of the children. The prevalence rate of children in western China was the highest, 31.9% and 28.3% respectively, and the incidence rate in east China(13.1%), south China (14.0%) and northeast China (16.6%) was relatively low. The prevalence rate of rural children (25.6%) was much higher than that of urban children(9.1%), especially in western rural areas.@*Conclusion@#The prevalence of iron-deficiency anemia among children aged 0-14 years in China from 2000 to 2020 is still high and the differences between different regions are significant, so more attention should be paid to the prevention and treatment of iron-deficiency anemia among infants and children in poor areas.
ABSTRACT
In this study,the current status for breast diseases in a region with high-incidence of cervical cancer were epidemiologically investigated.From March to August,2009,17618 women,from Wufeng area of Hubei province,China,were recruited to screen breast diseases by using breast infrared diagnostic apparatus.Other diagnostic methods,such as B-mode ultrasound,X-ray mammography,needle biopsy and pathological examination were,if necessary,used to further confirm the diagnosis.The screening showed that 5990 of 17618 cases (34.00％) had breast diseases,5843 (33.16％) had mammary gland hyperplasia,48 (0.27％) had breast fibroadenoma,ll (0.06％) had breast carcinoma,and 88 (0.50％) had other breast diseases.The peak morbidity of breast cancer was found in the women aged 50-0 ages.The morbidity of breast cancer was significantly increased in women elder than or equal to 50 years old (n=8,0.157％) in comparison with that in the subjects younger than 50 years old (n=3,0.024％) (u=2.327,P＜0.05).It was shown that the occurrence of breast diseases was concentrated in women aged 20-40 years,while the total morbidity reached its peak at the age of 30 years and then decreased sharply after age of 40.Compared with the patients elder than or equal to 40 years old (n=3289,27.46％),the morbidity rate of breast diseases was significantly increased in women less than 40 years old (2648 cases,47.18％; P＜0.001).However,there was no significant difference in the morbidity of breast diseases between the age group of 20-29 years and that of 30-39 years (P=0.453),and both of them were high.There was no significant association between the morbidity of breast diseases and cervical cancer.Since the morbidity of breast diseases was higher among young women,more attention should be paid to the screening of breast diseases among young women for early diagnosis.