Lens power in Iranian schoolchildren: a population-based study

2017 ◽  
Vol 102 (6) ◽  
pp. 779-783 ◽  
Author(s):  
Hassan Hashemi ◽  
Reza Pakzad ◽  
Rafael Iribarren ◽  
Mehdi Khabazkhoob ◽  
Mohammad Hassan Emamian ◽  
...  
Keyword(s):  
Anterior Chamber Depth ◽  
Multiple Linear Regression Model ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cluster Sampling ◽  
Cross Sectional ◽  
Total Study Population ◽  
Study Population ◽  
The Mean ◽  
Lens Power

AimsTo evaluate lens power (LP) in schoolchildren aged 6–12 years.MethodsThis cross-sectional study was conducted in Shahroud, northeast Iran. The students were selected through random cluster sampling and underwent the measurements of biometry, uncorrected and corrected visual acuity, non-cycloplegic and cycloplegic refraction. The LP was calculated using the Bennett formula.ResultsOf 6624 invited children, 5620 (84.8%) participated in the study and data of 4870 children were finally analysed. The mean age of the participants was 9.7 years and 2277 participants (46.02%) were girls. The mean LPs were 22.86 dioptres (D) in total study population, 23.91 D in 6 and 22.10 D in 12-year-old children. The mean LP was higher in girls than boys (23.48 D vs 22.34 D), in rural children than urban children (23.17 D vs 22.83 D) and in children with hyperopia (23.25 D) than children with myopia or emmetropia (22.64 D and 22.86 D, respectively). In the multiple linear regression model, lens thickness (β=1.59, p<0.001), anterior chamber depth (β=2.21, p<0.001) and female sex (β=0.016, p=0.015) were associated with an increase in the LP, while axial length (AL) (β=−4.41, p<0.001), corneal power (CP) (β=−1.47, p<0.001), spherical equivalent (SE) (β=−1.50, p<0.001) and age (β=−0.005, p=0.001) were associated with a decrease in the LP. AL and sex had the highest and lowest impact on LP, respectively.ConclusionLP decreased with age between 6 and 12 years and was associated with a shorter AL, deeper ACD, higher SE, thicker lens and lower CP.

scholarly journals Distribution of Ocular Anterior and Posterior Segment Lengths Among a Cataract Surgical Population in Shanghai

2021 ◽  
Vol 8 ◽  
Author(s):  
Jiao Qi ◽  
Wenwen He ◽  
Jiaqi Meng ◽  
Ling Wei ◽  
Dongjin Qian ◽  
...  
Keyword(s):  
Anterior Segment ◽  
Anterior Chamber Depth ◽  
Cross Sectional Study ◽  
Posterior Segment ◽  
Segment Length ◽  
Cross Sectional ◽  
Entire Study ◽  
Study Population ◽  
The Mean ◽  
Male Subjects

Purpose: To investigate the distributions of the ocular anterior and posterior segment lengths among a cataract surgical population in Shanghai.Design: Cross-sectional study.Methods: Ocular biometric parameters of 23,462 eyes of 23,462 cataract surgery candidates were reviewed. Axial length (AL), anterior chamber depth (ACD), and lens thickness (LT) were obtained using IOL Master. Anterior segment length (ASL = ACD + LT), posterior segment length (PSL = AL – ASL) and the ratio of ASL to PSL (ASL/PSL) were calculated.Results: The mean ASL was 7.58 ± 0.39 mm, the mean PSL was 17.12 ± 2.64 mm. As the age grew, the ASL increased, and PSL increased firstly then decreased. Male subjects tended to have significantly longer ASL and shorter PSL than female subjects. With the increasing AL, the ASL was firstly decreased to trough at 20–22 mm AL group, then increased gradually, while the PSL increased rapidly. The ASL correlated positively with AL in normal, moderate and highly myopic eyes, negatively in short eyes. The PSL correlated positively with AL across the entire study population. The ASL/PSL was not constant in the eyes with different AL but had a relatively steep downward trend with the increasing AL in the short eyes, then decreased smoothly in normal, moderate and highly myopic eyes.Conclusions: In Chinese cataractous eyes, longer ASL and shorter PSL were associated with elder age and male gender. The change of ASL over AL was not linear, and the ASL was smallest in the eyes with AL of 20–22 mm. The elongation of the eyeball was mainly due to the extension of the posterior segment.

scholarly journals Attitudes of faculty members towards using e-learning

2019 ◽  
Vol 8 (1) ◽  
pp. 12-19 ◽  
Author(s):  
Maryam Akbarilakeh ◽  
Alireza Razzaghi ◽  
Hoseein Delavar Pour Moghaddam
Keyword(s):  
Cross Sectional Study ◽  
Faculty Members ◽  
Medical Sciences ◽  
Attitude Assessment ◽  
Cross Sectional ◽  
Total Study Population ◽  
Electronic Learning ◽  
E Learning ◽  
Study Population ◽  
The Mean

Background: Faculty member’s attitude is one of the most important factors in the success of electronic learning. Understanding the attitudes of teachers toward e-learning can lead to an appropriate learning environment. This study aimed at examining the attitude of faculty members towards e-Learning at Shahid Beheshti University of Medical Sciences in 2016. Methods: In this cross-sectional study, 334 faculty members from the faculties of university were selected by random stratified sampling method and their attitude was assessed by questionnaires. Data was analyzed using SPSS 20. Results: The mean age of subjects was 49.09 (SD = 7.41). Of the total study population, 57.75% (190) were males and 42.25% (139) were females. The highest mean score among the dimensions of attitude assessment was related to sense of enjoyment with a mean of 29.26 (SD = 0.71) and the lowest mean related to self-efficacy (mean = 5.96) (SD = 0.82). Conclusion: The results of this study show that the attitude of faculty members is positive towards using appropriate e-learning. However, more studies are needed to assess the obstacles and approaches to improve the attitude of faculty members towards e-learning.

scholarly journals Ultra-processed food consumption in Barbados: evidence from a nationally representative, cross-sectional study

2021 ◽  
Vol 10 ◽  
Author(s):  
Rachel M. Harris ◽  
Angela M. C. Rose ◽  
Suzanne Soares-Wynter ◽  
Nigel Unwin
Keyword(s):  
Communicable Disease ◽  
Population Based ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Targeted Interventions ◽  
Sweetened Beverages ◽  
Group 4 ◽  
The Mean ◽  
Nationally Representative

Abstract Our objective was to describe, for the first time in an English-speaking Caribbean country, the contribution of ultra-processed foods (UPFs) to nutrients linked to non-communicable disease. Using a cross-sectional study design, dietary data were collected from two non-consecutive 24-h dietary recalls. Recorded food items were then classified according to their degree of processing by the NOVA system. The present study took place in Barbados (2012–13). A representative population-based sample of 364 adult Barbadians (161 males and 203 females) aged 25–64 years participated in the study. UPFs represented 40⋅5 % (838 kcal/d; 95 % CI 791, 885) of mean energy intake. Sugar-sweetened beverages made the largest contribution to energy within the UPF category. Younger persons (25–44 years) consumed a significantly higher proportion of calories from UPF (NOVA group 4) compared with older persons (45–64 years). The mean energy shares of UPF ranged from 22⋅0 to 58⋅9 % for those in the lowest tertile to highest tertile. Within each tertile, the energy contribution was significantly higher in the younger age group (25–44 years) compared with the older (45–64 years). One-quarter of persons consume ≥50 % of their daily calories from UPF, this being significantly higher in younger persons. The ultra-processed diet fraction contained about six times the mean of free sugars and about 0⋅8 times the dietary fibre of the non-ultra-processed fraction (NOVA groups 1–3). Targeted interventions to decrease the consumption of UPF especially in younger persons is thus of high priority to improve the diet quality of Barbadians.

scholarly journals Falls among the elderly: risk factors in a population-based study

2014 ◽  
Vol 17 (3) ◽  
pp. 705-718 ◽  
Author(s):  
Iara Guimarães Rodrigues ◽  
Gustavo Pereira Fraga ◽  
Marilisa Berti de Azevedo Barros
Keyword(s):  
The Elderly ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cluster Sampling ◽  
Elderly Adults ◽  
Cross Sectional ◽  
Population Based Study ◽  
Factors Associated ◽  
Gender And Age ◽  
Policies And Programs

Purpose: The aim of the present study was to identify factors associated with the occurrence of falls among elderly adults in a population-based study (ISACamp 2008). Methods: A population-based cross-sectional study was carried out with two-stage cluster sampling. The sample was composed of 1,520 elderly adults living in the urban area of the city of Campinas, São Paulo, Brazil. The occurrence of falls was analyzed based on reports of the main accident occurred in the previous 12 months. Data on socioeconomic/demographic factors and adverse health conditions were tested for possible associations with the outcome. Prevalence ratios (PR) were estimated and adjusted for gender and age using the Poisson multiple regression analysis. Results: Falls were more frequent, after adjustment for gender and age, among female elderly participants (PR = 2.39; 95% confidence interval (95%CI) 1.47 - 3.87), elderly adults (80 years old and older) (PR = 2.50; 95%CI 1.61 - 3.88), widowed (PR = 1.74; 95%CI 1.04 - 2.89) and among elderly adults who had rheumatism/arthritis/arthrosis (PR = 1.58; 95%CI 1.00 - 2.48), osteoporosis (PR = 1.71; 95%CI 1.18 - 2.49), asthma/bronchitis/emphysema (PR = 1,73; 95%CI 1.09 - 2.74), headache (PR = 1.59; 95%CI 1.07 - 2.38), mental common disorder (PR = 1.72; 95%CI 1.12 - 2.64), dizziness (PR = 2.82; 95%CI 1.98 - 4.02), insomnia (PR = 1.75; 95%CI 1.16 - 2.65), use of multiple medications (five or more) (PR = 2.50; 95%CI 1.12 - 5.56) and use of cane/walker (PR = 2.16; 95%CI 1.19 - 3,93). Conclusion: The present study shows segments of the elderly population who are more prone to falls through the identification of factors associated with this outcome. The findings can contribute to the planning of public health policies and programs addressed to the prevention of falls.

Prevalence of Malocclusion among School Children of Biratnagar, Nepal

2021 ◽  
Vol 11 (1) ◽  
pp. 46-48
Author(s):  
Nidhi Giri ◽  
Anand Acharya ◽  
Kanika Yadav
Keyword(s):  
School Children ◽  
Class Ii ◽  
Cross Sectional Study ◽  
Class I ◽  
Class Iii ◽  
Cross Sectional ◽  
Total Study Population ◽  
Medical College ◽  
Normal Occlusion ◽  
Study Population

Introduction: Various forms of malocclusion are a matter of serious concern in Nepalese population. This study was carried out to understand the prevalence of malocclusion among the school children of Biratnagar. The objective of this research is to find out the prevalence of malocclusion of children from different schools of Biratnagar visiting the Pedodontics and Orthodontics department of Nobel Medical College and Teaching Hospital, Biratnagar. Materials and Method: A descriptive cross sectional study method was used in this research. Data was collected by using direct observation of the subjects and occlusal assessment was done according to Angle’s classification and Dewey’s modification types of class I, class II and class III malocclusion. Result: Subjects with normal occlusion was found to be 39 % and with malocclusion was found to be 61%. Among them, class I malocclusion (60%) and angles class II div I subjects (88.33%) were in majority of the total study population. Conclusion: The present study helps to determine the prevalence of malocclusion and need of orthodontic treatment for the school children of Biratnagar

scholarly journals Prevalence of Dental Caries in Children

2021 ◽  
Vol 11 (1) ◽  
pp. 4-6
Author(s):  
Muhammad Alam Sikder ◽  
Tasneem Faruqui ◽  
KM Abdullah Al Harun ◽  
Sajjad Mahmud ◽  
Radia Faruqui
Keyword(s):  
Cross Sectional Study ◽  
Health Condition ◽  
Cross Sectional ◽  
Once Daily ◽  
Decayed Tooth ◽  
Dmft Index ◽  
Study Population ◽  
The Mean ◽  
Status Data ◽  
Oral Condition

This cross sectional study on oral condition among school going children in Sylhet city was conducted at Osmani Medical High School, Dorgah Gate, Sylhet, Bangladesh. This study was carried out on 8th October, 2019 among 208 students, mostly 12 years aged studying in Class VI. The main objective of the study was to assess the oral health condition of school going children through decayed, missing, and filled teeth (DMFT) status. Data was collected by personal interview and clinical examination of the respondents. Among 208 children, 96 (46.2%) were boys and 112 (53.8%) were girls. Among all, 63 (30.3%) respondents brush their teeth once daily while 137 (65.9 %) respondents brush twice a day, and 8 (3.8 %) of them brush their teeth more than twice daily. Fluoride containing toothpaste is used by 73 (35.1 %) students, 112 (53.8 %) students did not know whether their toothpaste contain fluoride or not, and 23 (11.1 %) students do not use fluoride. Among all respondents, 125(60.09 %) did not have any decayed tooth, while 83(39.90 %) had tooth decay, and 20(9.6 %) had their teeth filled. Normal gingival condition was found in 185 (88.94 %) subjects, but 23(11.06 %) of them had red or swollen gingiva. The mean DMFT of the study population was 1.19 which is considered as “low” according to “WHO quantification for the DMFT index”. Update Dent. Coll. j: 2021; 11 (1): 4-6

scholarly journals Hotspots of unimproved sources of drinking water in Ethiopia: Mapping and Spatial analysis of Ethiopia Demographic and Health Survey Data 2016

2019 ◽  
Author(s):  
Getahun Gebre Bogale
Keyword(s):  
Drinking Water ◽  
Statistical Tests ◽  
National Level ◽  
Population Based ◽  
Cross Sectional Study ◽  
Moran’S I ◽  
Systematic Sampling ◽  
Cluster Sampling ◽  
Cross Sectional ◽  
Moran's I

Abstract Background: More than 35% of Ethiopian population is using drinking water from unimproved sources. As per the United Nations’ Sustainable Development Goals, Ethiopia is aspiring to achieve universal and equitable access to safe and affordable drinking water for all by 2030. For these goals to be accomplished, it is important to map the country’s hotspot areas of unimproved source of drinking-water so that resource allocation and disease control can be optimized there. Methods: A population based cross-sectional study was conducted in Ethiopia from January 18 to June 27, 2016. Data were collected from 10,064 households using a pretested and structured questionnaire. A stratified two-stage cluster sampling was employed where the enumeration areas were primary sampling units and households were secondary sampling units. Systematic sampling with probability proportional to size was employed to select samples. Data were cleaned in spreadsheet and entered in to SaTScan and ArcGIS soft-wares for mapping and analysis. The Global Moran’s I and spatial scan statistical tests (Bernoulli model) were done to explore the presence of clustering in the study area and local spatial clusters (hotspots) of unimproved sources of drinking water using ArcGIS version 10.3 and Kuldorff’s SaTScan version 9.4 soft-wares, respectively. Moran’s I value closer to +1 declared presence of clustering at national level and Log-Likelihood ratio (LLR) greater than the critical value with p<0.05 declared statistical significant hotspots across the regions. Results: In this study, unimproved sources of drinking water were spatially clustered at the study area (Moran’s I: 0.35, p<0.05). A total of 143 significant clusters were identified. Of which, eight were most likely (primary) clusters and the rest 135 were secondary clusters. The first spatial window which contains primary clusters was located in Amhara and Afar regions (LLR: 78.89, at p<0.001). The rest 33 spatial windows which contain secondary clusters were found in all regions, except Gambela region and Addis Abeba city administration (with a range of LLR: 10.09-78.89, p<0.001). Conclusions: This study identified non-random clusters and hot spots of unimproved sources of drinking water. Therefore, the result helps decision makers for their geographical interventions to combat problems related to hotspots.

scholarly journals Waist Circumference, Blood Pressure and Lifestyle of Sudanese Population, Khartoum Locality, Sudan 2016

2019 ◽  
pp. 1-8
Author(s):  
Asma Abdelaal Abdalla ◽  
Siham Ahmed Balla ◽  
Amna Abdalla Babiker ◽  
Safaa Abdelhameed Medani ◽  
Rania Abdalla Osman Khalfa ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Waist Circumference ◽  
Physical Exercise ◽  
Age Distribution ◽  
Cross Sectional Study ◽  
P Value ◽  
Cross Sectional ◽  
Men And Women ◽  
Study Population ◽  
The Mean

Aims: To measure the waist circumference of Sudanese adults in Khartoum Locality and its relationship to blood pressure and lifestyle  during celebration of international day of hypertension in May 2016 . Study Design: It was a descriptive cross-sectional study. Place of the Celebration: Khartoum Locality at Alsahaa Alkhadraa (The Green Park). Methodology: A total of 364 adult participants, 196 men and 168 women were interviewed using structured questionnaire. Blood pressure (BP) was measured considering hypertension as ≥ 140 mmHg and ≥ 90 mmHg for systole and diastole BP respectively. Waist circumference was measured using an anthropometric measuring tape at cut-off point of 94 cm and 80 cm for men and women respectively. Data was managed by SPSS version 20 and Chi-square test at 95% CL was used to test the association between waist circumference, blood pressure and life style characteristics. Results: Age distribution of the study population showed 48.2% females and 45.4% males in the middle age group (38-57 years). Two thirds of the study population were hypertensive, 62.8% of males and 64.3% of females. The mean waist circumference of men was 97.82 cm + 16.7, mean Systolic BP was 127 + 22 and mean Diastolic BP was 85 + 15. The mean waist circumference of women was 99.31 + 16.2, mean Systolic was 128 + 24 and mean Diastolic BP was 84 +17. Abnormal waist circumference was found in 61.2% of males and 86.9% of females. Fifty nine (30.1%) of the males and 86 (51.2%) of the females with abnormal waist circumference were hypertensive. The association between abnormal waist circumference and high blood pressure was significant among both sexes, P value = 0.001. Physical exercise and fat and salt foods were not significantly associated waist circumference in both men and women. Conclusion: Two thirds of women and men in the celebrating areas were hypertensive.  Half of women and one third of men were significantly hypertensive and having abnormal waist circumference. Doing physical exercise, avoiding fat and salt foods was insignificantly associated with normal waist circumference. Large survey with representative sample is needed to estimate the real Sudanese waist circumference.  

scholarly journals PREVALENCE OF HYPERTENSION IN ADULT POPULATION OF HAYATABAD PESHAWAR

1969 ◽  
Vol 5 (1) ◽  
pp. 644-647
Author(s):  
SARA GUL ◽  
ATIF HUSSAIN ◽  
KASHIF UR REHMAN KHALIL ◽  
IMRANULLAH ◽  
MUHAMMAD ISHTIAQ ◽  
...  
Keyword(s):  
Communicable Disease ◽  
Adult Population ◽  
Positive Association ◽  
Developed Countries ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Study Results ◽  
History Of ◽  
Study Population

BACKGROUND: Hypertension is one of the common non communicable disease and is reported to beprevalent in 20% to 50% of the adult population, hypertension is one of the major contributor ofmortality and morbidity in developing and developed countries. The cross-sectional descriptive studywas formulated to find the prevalence and to assess different etiological factors of hypertension.MATERIAL & METHODS: This cross-sectional study among 400 adults of age 25-75 years wasconducted in months of June to December 2014 in Phase 5, Hayatabad Peshawar. A detailed structuredproforma having important questions was used to collect important data regarding various variables.RESULTS: Our study results showed that 22.75% of the study people were hypertensive i.e. 10.25% ofmales and 12.5% of females; and the prevalence of hypertension showed positive association withadvancing age. Out of all respondents; 60.25% were males while 39.75% were females; 28.5% weresmokers; 5.25% consume predominantly meat; 32.5% were obese & overweight; 36.75% checked theirB.P regularly; and 19.75% had positive history of hypertension in family.CONCLUSION: We conclude that hypertension prevalence was high among our study population andwas associated with various modifiable and non modifiable risk factors thus population based preventivestrategies are needed to control and prevent hypertension.KEY WORDS: Hypertension, Age, Diet, Smokers, Hayatabad, Peshawar.

Association between cardiometabolic index and stroke: A population-based cross-sectional study

2021 ◽  
Vol 18 ◽  
Author(s):  
Feng-E Li ◽  
Yi Yang ◽  
Zhen-Ni Guo ◽  
Yun Luo ◽  
Fu-Liang Zhang ◽  
...  
Keyword(s):  
Stroke Risk ◽  
Multivariate Logistic Regression Analysis ◽  
Density Lipoprotein ◽  
Population Based ◽  
Cross Sectional Study ◽  
Cluster Sampling ◽  
Sectional Study ◽  
Cross Sectional ◽  
Discrimination Ability ◽  
Cardiometabolic Index

Background: Cardiometabolic index (CMI) is associated with several risk factors for stroke; however, few studies have assessed the role of CMI in stroke risk. Objective: This study aimed to assess the association between CMI and stroke in a population-based cross-sectional study. Methods: This study included 4445 general residents aged ≥40 years selected by multistage stratified random cluster sampling. CMI was calculated as the product of the ratio of waist circumference to height (WHtR) and the ratio of triglyceride levels to high-density lipoprotein cholesterol levels (TG/HDL-C). Participants were categorized according to CMI quartiles: quartile 1 (Q1), quartile 2 (Q2), quartile 3 (Q3), and quartile 4 (Q4). Multivariate logistic regression analysis and receiver operating characteristic (ROC) curves were used to assess the association between CMI and stroke. Results: A total of 4052 participants were included in the study, with an overall stroke prevalence of 7.2%. The prevalence of stroke increased with CMI quartiles, ranging from 4.4% to 9.2% (p for trend <0.001). Compared with Q1, stroke risk for Q2, Q3, and Q4 were 1.550-, 1.693-, and 1.704- fold, respectively. The area under the ROC curve (AUC) [95% CI] was (0.574 [0.558−0.589]) for CMI, 0.627 [0.612−0.642]) (p=0.0024) for WHtR, 0.556 [0.540−0.571]) (p<0.0001) for TG/HDL-C. CMI was inferior to WHtR, but CMI had marginal advantage over TG/HDL-C in terms of its stroke discrimination ability. Conclusion: Although there was a strong and independent association between CMI and stroke in the general population, CMI had limited discriminating ability for stroke. Thus, new parameters should be developed.

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