Prevalence and risk factors for pterygium: a cross-sectional study in Han and Manchu ethnic populations in Hebei, China

AimsTo investigate the prevalence, ethnic differences and associated risk factors for pterygium in Han and Manchu populations aged 40–79 years in Hebei province, China.DesignCross-sectional study, as a part of the China National Health Survey.SettingHebei province, China.ParticipantsA multistage clu...

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Bibliographic Details
Published in:BMJ open 2019-02, Vol.9 (2), p.e025725-e025725
Main Authors: Pan, Zhouxian, Cui, Jiantao, Shan, Guangliang, Chou, Yuyu, Pan, Li, Sun, Zixi, Cui, Ze, Sun, Jixin, Cao, Yajing, Zhao, Jingjing, Ma, Xinyan, Ma, Jifei, He, Huijing, Ma, Jin, Zhong, Yong
Format: Article
Language:English
Subjects:
Adult
Age
Age Factors
Aged
Asian Continental Ancestry Group
Blood pressure
China - epidemiology
Cholesterol
Cross-Sectional Studies
Cultural heritage
Diabetes
Diabetic retinopathy
Fasting
Female
Health risk assessment
Humans
Hypertension
Lipoproteins
Lipoproteins, HDL - blood
Logistic Models
Male
Menopause, Premature
Middle Aged
Minority & ethnic groups
Multivariate Analysis
Ophthalmology
Population
Prevalence
Pterygium - ethnology
Pterygium - etiology
Risk Assessment - methods
Risk Factors
Rural areas
Sex Factors
Smoking
Systematic review
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Summary:AimsTo investigate the prevalence, ethnic differences and associated risk factors for pterygium in Han and Manchu populations aged 40–79 years in Hebei province, China.DesignCross-sectional study, as a part of the China National Health Survey.SettingHebei province, China.ParticipantsA multistage cluster sampling method with urbanisation level-based stratification was used to select participants for this study. A total of 4591 individuals over 40 years were recruited for this study. Inclusive criteria: (1) residents who had been living in Hebei for more than 1 year; (2) Han individuals with both parents being Han, or Manchu individuals with both parents being Manchu; (3) underwent ophthalmic examinations and (4) information in the questionnaire was complete.Main outcome measuresMultiple logistic regression analysis was used to evaluate the association between pterygium prevalence and factors of interest.ResultsA total of 3790 individuals (2351 Hans and 1439 Manchus) met the study criteria, of which 248 were diagnosed with pterygium (6.5%). There was no significant difference between the prevalence rates in Hans (6.2%) and Manchus (7.2%) (p=0.232). Multivariate analysis revealed that the risk factors for grade 2 or higher pterygium were increasing age (p
ISSN:2044-6055
2044-6055
DOI:10.1136/bmjopen-2018-025725