Associations Between Reading and Writing Posture and Myopia Among School Students in Ningbo, China

2021 ◽  
Author(s):  
Danjie Jiang ◽  
Bijun Shi ◽  
Hua Gao ◽  
Yanbo Guo ◽  
Shaoying Zhou ◽  
...  
Keyword(s):  
Middle School ◽  
Visual Acuity ◽  
High School Students ◽  
Middle School Students ◽  
Primary School ◽  
Protective Factor ◽  
Primary School Students ◽  
School Students ◽  
Cross Sectional ◽  
Reading And Writing

Abstract Purpose: We conducted this study to examine the prevalence of myopia among school students in Ningbo, and to explore the associations between reading and writing posture and myopia.Methods: A population-based and cross-sectional investigation was performed and 3256 school students aged 8 to 19 years old were recruited. Each enrolled subject underwent uncorrected distance visual acuity (UDVA) assessment using a standard logarithmic visual acuity E chart and non-cycloplegic autorefraction examination. Self-administered questionnaires were used to investigate myopia-related reading and writing posture and behavior habits.Results: Myopia prevalence of primary school students, middle school students and high school students were 61.49%, 81.43% and 89.72%, respectively. In the associations between reading and writing posture and myopia, we identified keeping the distance between the eyes and the book could be the protective factor in female students, and in both primary school students and middle school students.Conclusions: Keeping appropriate distance between the eyes and the book may be good for myopia prevention and control. We hope this work will bring educational and public health benefits to form appropriate reading and writing posture.

scholarly journals Prenatal and neonatal factors for the development of childhood visual impairment in primary and middle school students: a cross-sectional survey in Guangzhou, China

BMJ Open ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. e032721
Author(s):  
Bolan Yu ◽  
Lijuan Dai ◽  
Juanjuan Chen ◽  
Wen Sun ◽  
Jingsi Chen ◽  
...  
Keyword(s):  
Middle School ◽  
Visual Acuity ◽  
Middle School Students ◽  
Visual Impairment ◽  
High Birth Weight ◽  
Delivery Mode ◽  
Cross Sectional Survey ◽  
School Students ◽  
Cross Sectional ◽  
Postnatal Factors

ObjectivesIn this cross-sectional survey, we sought to determine the prevalence of and the influence of prenatal and neonatal factors on childhood visual impairment without correction (VIUC) in a paediatric population from Guangzhou, China.SettingThe health survey covered 11 administrative districts in Guangzhou, including 991 schools.ParticipantsAll of the primary and middle school students in Guangzhou were invited to complete an online questionnaire with the help of their parents. The results of physical examinations were reported by school medical departments. The results of the questionnaire were collected by the researchers. In total, 253 301 questionnaires were collected.Primary outcome measuresThe students’ uncorrected visual acuity (UCVA) was examined by trained optometrists by standard logarithmic visual acuity charts. VIUC was defined by UCVA (of the better eye) (UCVA <6/12) with three levels: light VIUC (UCVA ≥6/18 to <6/12), mild VIUC (UCVA ≥6/60 to <6/18) and severe VIUC (UCVA <6/60).ResultsA total of 39 768 individuals (15.7%) had VIUC, and the rate was much higher among grade 10 to 12 students (51.4%) than among grade 1 to 6 students (6.71%). The following factors were significantly associated with an increased risk of VIUC: female gender, high birth weight, formula feeding, not having siblings, higher level of parents’ education, parental myopia, much homework time and little outdoor activity. Delivery mode was not associated with the risk of VIUC.ConclusionsThis study validates known major prenatal/genetic, perinatal and postnatal factors for childhood VIUC. In conclusion, prenatal and perinatal factors can affect the onset of childhood VIUC, but parental myopia and postnatal factors are the main factors.

scholarly journals Applicability of the Smart Vision Screening Instrument among Chinese Primary School Students

2021 ◽  
Author(s):  
Yaofei XIE ◽  
Wenlong XU ◽  
Lihua YANG ◽  
Wenwen WU ◽  
Xiaodong TAN
Keyword(s):  
Visual Acuity ◽  
Primary School ◽  
Predictive Value ◽  
Roc Curves ◽  
Screening Instrument ◽  
Vision Screening ◽  
Test Results ◽  
Primary School Students ◽  
School Students ◽  
Cross Sectional

Background: A smart vision screening instrument was applied for screening low eyesight in primary school students in Wuhan, China. We aimed to compare the differences in test results between this instrument and lamp-box visual acuity charts, assess the validity of the screening results, and perform a preliminary comparison of the cost inputs of the two approaches. Methods: In this cross-sectional study conducted in Wuhan, China in 2017, vision tests were performed on the same day among enrolled primary school students by using the two approaches. The t-test and kappa test were performed to compare the differences, and the indicators of validity were calculated and receiver operating characteristic (ROC) curves were drawn. Existing cost-input data were collected and the budget was analyzed. Results: In total, 1001 schoolchildren were included, and the prevalence of low eyesight was 21.18% (95% CI: 18.71-23.87%). The test results of the two approaches were not statistically different (t=1.929, P>0.05) and showed moderate consistency (kappa=0.519, P<0.001). Sensitivity and specificity of the instrument were 84.90% (95% CI: 79.21-89.30%) and 91.63% (95% CI: 89.42-91.64%), respectively; positive predictive value was 73.17% (95% CI: 67.10-78.51%); and negative predictive value was 95.76% (95% CI: 94.00-97.04%). Area under the ROC curve was 0.883 (95% CI: 0.853-0.913) and significantly differed from 0.5 (P<0.001). The budget when using the instrument decreased 48.07% compared to that when using lamp-box visual acuity charts. Conclusion: The test result of the instrument is reliable, and using it to conduct screening is cost-saving. Therefore, it might be popularized for vision monitoring in schoolchildren.

scholarly journals High Prevalence of Myopia and Low Hyperopia Reserve in 4411 Chinese Primary School Students and Associated Risk Factors

2021 ◽  
Author(s):  
Yu Yue ◽  
Xianmao Liu ◽  
Shu Yi ◽  
Bo Liu ◽  
Hong Yi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Visual Acuity ◽  
Primary School ◽  
Healthcare Providers ◽  
Cross Sectional Study ◽  
Radius Of Curvature ◽  
Outdoor Activity ◽  
Primary School Students ◽  
School Students ◽  
Cross Sectional

Abstract Purpose: To investigate the prevalence of myopia in Chinese primary school students and their ocular biometrics including axial length (AL), corneal radius of curvature (CRC) and spherical equivalent refraction (SER). To analyze their association with potential myopia risk factors, such as body mass index (BMI), cram school, time of outdoor activity and electronic screen use. Methods: In this cross-sectional study of 4500 primary school students from 5 schools, participants underwent refraction using non-cycloplegic autorefractor and visual acuity testing. Myopia was defined as SER ≤ -0.50 diopter (D) and uncorrected visual acuity (UCVA) ＜ 0.00 logMAR (6/6). Logistic regression models were used to determine factors associated with myopia.Results: After excluding 389 participants, the overall prevalence of myopia was 33.6%. The prevalence of high myopia was 0.6%. The prevalence of myopia in girls was significantly higher than that in boys（37.6% vs. 30.0%, p<0.001). The height, weight and BMI were significantly associated with AL (r=0.471, r=0.440, r=0.276, p <0.001, respectively). AL/CRC ratio was more highly correlated with SER than AL alone. Age (p < 0.001), parental myopia (p = 0.001) and lack of outdoor activity between classes (p = 0.049) were independently associated with higher prevalence rates of myopia.Conclusion: The prevalence of myopia among Chinese schoolchildren is alarming high. Consistent with previous cross-sectional data, AL/CRC could function as myopia detection indicator. The hyperopia reserve among children aged between 6 ~7 years was low. Healthcare providers need to raise parents’ awareness of the importance of regular eye examination and proper optical correction.

Using Social Cognitive Theory to Predict Intention to Smoke in Middle School Students

2020 ◽  
Vol 30 (2) ◽  
Author(s):  
Garrett Miller ◽  
Manoj Sharma ◽  
David Brown ◽  
Mohammad Shahbazi
Keyword(s):  
Middle School ◽  
Middle School Students ◽  
Social Cognitive Theory ◽  
Social Cognitive ◽  
Cognitive Theory ◽  
Self Control ◽  
School Students ◽  
Cross Sectional ◽  
Emotional Coping ◽  
Cross Sectional Design

The purpose of this study was to use social cognitive theory to predict the frequency and intention for not smoking among middle school students. The study utilized a cross-sectional design (n=163) and administered a 38-item valid and reliable questionnaire. Frequency for smoking was predicted by environment not supportive to smoking (p < 0.0001) and emotional coping (p < 0.001) (Adjusted R2= 0.20). Intent to smoke was predicted by emotional coping (p < 0.0001); environment not supportive to smoking (p < 0.001), expectations for not smoking (p < 0.003), and self-control for not smoking (p <0.017) (Adjusted R2= 0.36).

scholarly journals Association between breakfast-eating habit and attention-concentration in primary school children: a cross-sectional study in Badung District

2018 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Ni Made Ari Sukmandari ◽  
Ni Wayan Septarini ◽  
Gede Ngurah Indraguna Pinatih
Keyword(s):  
Primary School ◽  
School Children ◽  
Cross Sectional Study ◽  
Primary School Children ◽  
Sectional Study ◽  
Eating Habit ◽  
Primary School Students ◽  
School Students ◽  
Cross Sectional ◽  
Breakfast Eating

AbstractBackground and purpose: One of the main benefits of breakfast-eating habit for schoolchildren is to maintain the attention-concentration. The current trend shows a steady decline in the breakfast-eating habit among primary school children. This present study aims to examine the association between breakfast-eating habit and attention-concentration in primary school children.  Methods: A cross-sectional study was conducted involving 160 primary school students year 5 and 6. Samples were selected from six public primary schools within two villages. There were a total of 16 classes of year 5 and 6 in these six schools, and five classes were selected randomly. All students from the selected classes included in the study. Attention-concentration was measured using a digit symbol test, and breakfast-eating habit and total calories intake were measured using the recall 24 hours and a standardised questionnaire. Multivariate analysis with logistic regression was employed to examine the association between breakfast-eating habit and attention-concentration.Results: The majority of students were found to have good concentration (60.63%), with breakfast-eating habit (75.00%), and consumed sufficient amount of calories (53.13%). Our multivariate analysis found a significant association between breakfast-eating habit and attention-concentration among schoolchildren (AOR=14.0; 95%CI: 4,9–67,8).Conclusions: Students with breakfast-eating habit tend to have a good attention-concentration. The total calories intake during breakfast is not associated with attention-concentration among primary school students in Badung District.  

scholarly journals A Middle School Program to Prevent E-Cigarette Use: A Pilot Study of “CATCH My Breath”

2020 ◽  
Vol 135 (2) ◽  
pp. 220-229 ◽  
Author(s):  
Steven H. Kelder ◽  
Dale S. Mantey ◽  
Duncan Van Dusen ◽  
Kathleen Case ◽  
Alexandra Haas ◽  
...  
Keyword(s):  
Middle School ◽  
High School Students ◽  
Middle Schools ◽  
Cognitive Theory ◽  
The United States ◽  
School Level ◽  
Cigarette Use ◽  
School Students ◽  
Cross Sectional

Objectives: From 2017 to 2018, electronic cigarette (e-cigarette) use increased 78% among high school students and 48% among middle school students in the United States. However, few e-cigarette prevention interventions have been evaluated. We determined the feasibility and initial effectiveness of “CATCH My Breath,” an e-cigarette prevention program, among a sample of middle schools in central Texas. Methods: Twelve middle schools in Texas (6 intervention schools and 6 control schools) participated in the CATCH My Breath pilot program during 2016-2017. CATCH My Breath is rooted in social cognitive theory, consists of 4 interactive in-class modules, and is collaboratively administered via classroom and physical education teachers, student–peer leaders, and social messaging (eg, school posters). We collected 3 waves of data: baseline (January 2017), 4-month follow-up (May 2017), and 16-month follow-up (May 2018). Using school as the unit of analysis, we tested a repeated cross-sectional, condition-by-time interaction on e-cigarette ever use, psychosocial determinants of use, and other tobacco use behaviors. Analyses controlled for school-level sociodemographic characteristics (eg, sex, race/ethnicity, and percentage of students eligible for free or reduced-price lunch). Results: From baseline to 16-month follow-up, increases in ever e-cigarette use prevalence were significantly lower among intervention schools (2.8%-4.9%) than among control schools (2.7%-8.9%), controlling for covariates ( P = .01). Intervention schools also had significantly greater improvements in e-cigarette knowledge (β = 0.71; 95% confidence interval [CI], 0.21-1.21; P = .008) and perceived positive outcomes (β = –0.12; 95% CI, –0.23 to –0.02; P = .02) than control schools, controlling for covariates from baseline to 16-month follow-up. Conclusion: Ever e-cigarette use was lower among middle schools that implemented the CATCH My Breath program than among those that did not. Replication of findings among a larger sample of schools, using a group-randomized, longitudinal study design and a longer follow-up period, is needed.

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