The Comparison of Twinning Rates Between Urban and Rural Areas in China

2007 ◽  
Vol 10 (4) ◽  
pp. 633-637 ◽  
Author(s):  
Jian-Ping Gan ◽  
Zhong-Hua Wu ◽  
Zhi-Ming Tu ◽  
Jian Zheng
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Maternal Age ◽  
Age Groups ◽  
Vital Statistics ◽  
Differential Method ◽  
Age Group ◽  
Vitro Fertilization ◽  
Urban And Rural Areas

AbstractBased on the birth record data from the National Vital Statistics in the 1990 Census of China, the present study analyzed the differences between urban and rural areas on monozygotic (MZ) and dizygotic (DZ) twin rates by maternal age in 1989. The twins by zygosity were calculated with Weinberg's differential method. Results show that the MZ and DZ twinning rates in China were associated with maternal age and that there were substantial differences between urban and rural areas. The MZ twinning rates in urban and rural areas were 2.36 pairs and 2.11 pairs per 1000 deliveries respectively, significantly lower than that in most studied populations. Furthermore, our analysis indicated that MZ twinning rates remained relatively constant for mothers under the age group of 36 to 38 years, but rose over this age group in both areas, albeit with a different slope. The DZ twinning rates were strikingly affected by maternal age, but the age for peak DZ rates was found within the age group of 33 to 35 years. In all maternal age groups except for 24 to 26 years, the DZ twinning rates in urban areas were higher than in rural areas. It remains unclear as to why the DZ twinning rates reversed to reach higher values within the older maternal age groups in China, but it is almost certain that the high twinning rates had nothing to do with in vitro fertilization.

scholarly journals Prevalence of Smear-Positive Tuberculosis among Patients Who Visited Saint Paul’s Specialized Hospital in Addis Ababa, Ethiopia

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Dinna Abera Nugussie ◽  
Getachew Ali Mohammed ◽  
Anteneh Tesfaye Tefera
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Addis Ababa ◽  
Age Groups ◽  
Hiv Positive ◽  
Age Group ◽  
Hiv Status ◽  
Specialized Hospital ◽  
Urban And Rural Areas ◽  
Hiv Negative

Background. Tuberculosis (TB) continues to be a health problem in both developed and developing countries, including Ethiopia. Objective. In this study, the prevalence of smear-positive tuberculosis among presumptive TB cases who visited the hospital was assessed. Method. Acid fast bacilli (AFB) test was performed on samples collected from 200 presumptive TB cases. Data were analyzed using appropriate statistical tools. Result. Among 200 presumptive TB cases, 10% (20 individuals) (60% were male and 40% were female) were found to be positive for the AFB. Of these AFB positive subjects, 11.2% and 6.3% were from urban and rural areas, respectively. Among 20 AFB positive cases, 45% (9), 45% (9), and 10% (2) were HIV positive, HIV negative, and with HIV status unknown, respectively. The highest AFB positive cases were found within age group between 25 and 44 years (70%) and followed by age above 40 years (30%). It was found out that 75% (15), 15% (3), 5% (1), and 5% (1) were unemployed, government employed, student, and nongovernment employed, accordingly. Conclusion. This study indicated higher level of AFB positive cases within age groups of 25–44 and 65–74 years and also exhibited higher prevalence of TB cases from urban areas.

Trends of Twinning Rates in Ten Countries, 1972-1996

1997 ◽  
Vol 46 (4) ◽  
pp. 209-218 ◽  
Author(s):  
Y. Imaizumi
Keyword(s):  
Hong Kong ◽  
In Vitro Fertilization ◽  
Old Age ◽  
Maternal Age ◽  
Age Groups ◽  
Vital Statistics ◽  
Biological Factors ◽  
Vitro Fertilization ◽  
Reproductive Techniques

AbstractTrends of twinning rates were analyzed using vital statistics in Austria, Finland, Norway, Sweden, Canada, Australia, Hong Kong, Israel, Japan, and Singapore during the period from 1972 to 1996. The twinning rates increased significantly year by year in each country. During these periods, the twinning rate increased by twenty percent in Austria and Canada, and by sixty percent in Norway and Sweden. The twinning rate was 1.6 times higher in Sweden than in Hong Kong in 1972 and by eighty percent in Israel in 1995. Twinning rates were higher in European countries, Canada, and Australia than in Asia. The variations of the twinning rates among countries were not only due to biological factors, but also to assisted reproductive techniques. In Australia, the overall twinning rate was 1.3 times higher in the nuptial births (14.1 per 1000 births) than in the ex-nuptial births (10.7) during the period 1994-1996. As for maternal age, twinning rates in Sweden increased year by year for maternal age groups except the youngest and the oldest age groups. In Sweden, the rising twinning rate has been attributed to the higher proportion of mothers (for the 25-39 year old age groups) treated with ovulation-inducing hormones and attributed to in-vitro fertilization.

scholarly journals Using RFLP-PCR Technique in Determining Genotypes of Giardia lamblia from Diarrhea Cases in Children in AL-Diwaniyah City, Iraq

2020 ◽  
Vol 1 (2) ◽  
pp. 29-34
Author(s):  
Hadi M. Hamza AL-Mayali ◽  
Lubna Abdul-Kadir AL-Ibrahim
Keyword(s):  
Rural Areas ◽  
Giardia Lamblia ◽  
Urban Areas ◽  
Age Groups ◽  
Intestinal Protozoa ◽  
Gender And Age ◽  
Dehydrogenase Gene ◽  
Urban And Rural Areas ◽  
Child Hospital ◽  
Genotype A

Introduction: Giardia lamblia is one of the most prevalent intestinal protozoa in the world, which affect children in both undeveloped and developing countries. This study aimed to determine genotypes of the Giardia lamblia using polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP)-PCR techniques. Additionally, the relationship between genotype patterns and their geographical distribution, gender, and age was investigated. Methods: The current study included 926 samples of faeces of children suffering from diarrhoea, who visits the internal clinics at Teaching Hospital, and Child Hospital in AL- Diwaniyah City from November 2012 - Jun 2013. For age groups of 1-12 years exclusively. The samples were examined using a direct mount wet smear, The positive samples were preserved without adding preservatives at a temperature of -20°C until the DNA extraction for G. lamblia genotyping by using PCR and RFLP-PCR technique. Results: Giardia lamblia was detected in 2.15% (20/926) of samples from diarrhea cases in children by amplification of glutamate dehydrogenase gene (gdh) using two specific primers GDHiR and GDHiF. It was revealed that 7 samples belonged to genotype A (35%) and 13 samples belonged to genotype B (65%). All genotype A samples belonged to subgenotype AII (100%), while genotype B samples belonged to subgenotypes BIII (53.61 %) and BIV (47.38 %). Genotype A was detected in children of 1-6 years of age while B genotype was detected in all age groups. Both of the genotypes have been detected in both genders (male and female) and genotype B was found in both urban and rural areas; however, its prevalence was higher in rural areas than in urban areas (100% and 30%, respectively). Conclusion: There are two genotypes of Giardia lamblia, genotype A and genotype B, each of which has secondary genetic patterns which include AII, BIII, and BIV.

scholarly journals Overcoming male factor infertility with intracytoplasmic sperm injection

2017 ◽  
Vol 63 (8) ◽  
pp. 697-703 ◽  
Author(s):  
Edson Borges Jr. ◽  
Bianca Ferrarini Zanetti ◽  
Daniela Paes de Almeida Ferreira Braga ◽  
Amanda Souza Setti ◽  
Rita de Cássia Sávio Figueira ◽  
...  
Keyword(s):  
Intracytoplasmic Sperm Injection ◽  
Maternal Age ◽  
Age Groups ◽  
Control Group ◽  
Male Factor Infertility ◽  
Male Factor ◽  
Vitro Fertilization ◽  
Tubal Factor ◽  
Icsi Outcomes

Summary Objective: To evaluate the effect of male factor infertility on intracytoplasmic sperm injection (ICSI) outcomes compared with a control group presenting isolated tubal factor. Method: This retrospective study included 743 couples undergoing ICSI as a result of isolated male factor and a control group consisting of 179 couples undergoing ICSI as a result of isolated tubal factor, performed in a private university- -affiliated in vitro fertilization center, between January/2010 and December/2016. Patients were divided into two groups according to maternal age: women ≤35 years old and >35 years old. The effects of infertility causes on laboratorial and clinical ICSI outcomes were evaluated using Student's t-test and (2 test. Results: No differences in controlled ovarian stimulation outcomes were observed between male factor cycles and tubal factor cycles in the two age groups. Implantation (male factor 35.5% vs. tubal factor 32.0%, p=0.340), pregnancy (male factor 46.9% vs. tubal factor 40.9%, p=0.184) and miscarriage (male factor 10.3% vs. tubal factor 10.6%, p=0.572) rates were similar between the infertility groups, irrespective of female age. Considering maternal age, the cancelation rate was higher in older women (>35 years old) undergoing ICSI as a result of male factor infertility (17.4% vs. 8.9%, p=0.013). Conclusion: Our results showed that there is no difference in the outcomes of pregnancy between couples with male or tubal factor infertility, which indicates that ICSI surpasses the worse specific outcomes associated with male factor.

scholarly journals Dietary Modifications during Pregnancy through Decades

2021 ◽  
Vol 14 (02) ◽  
pp. e43-e48
Author(s):  
Yamini Bhatt ◽  
Kalpana Kulshrestha
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Dietary Habits ◽  
Age Groups ◽  
Nutritional Supplements ◽  
Age Group ◽  
Food Items ◽  
Diet Recall ◽  
Dietary Modifications ◽  
Selection Of

AbstractThe present study aimed to explore the modifications in diet during pregnancy over three generations in the Garhwal region of Uttarakhand. For the selection of the sample, the respondents were categorized in 3 age groups: 20 to 34 years; 35 to 55 years; and ≥ 56 years. Structured diet recall interviews were scheduled for the collection of data. The subjects were asked about their dietary habits during pregnancy and food items that they included and excluded during that period. Most food items mentioned included were milk, fruits, and nutritional supplements. The exclusion of fruits like banana and papaya, of rice, and of leafy green vegetables (LGVs) was mainly observed. Among the age group of ≥ 56 years, the respondents with no changes in their diet during pregnancy were more from rural areas (92%) than from urban areas (62.26%), while in the age group of 20 to 34 years, 25% of the respondents with no change in their diet lived in rural areas, and 8.06% lived in urban areas. There has been an increase in the population with dietary modifications through generations; however, the overall changes are still not satisfying. The present study shows that there is a high need for nutritional education during pregnancy, especially in rural areas.

Anisometropia in the 5th and 6th school years

2020 ◽  
Vol 30 (Supplement_2) ◽  
Author(s):  
A F Nunes ◽  
A S Nunes ◽  
P Monteiro ◽  
C R Martins ◽  
H Forte
Keyword(s):  
Binocular Vision ◽  
Rural Areas ◽  
Urban Areas ◽  
Basic Education ◽  
Age Groups ◽  
Separate Analysis ◽  
Chi Square ◽  
Screening Programs ◽  
The Difference ◽  
Urban And Rural Areas

Abstract Introduction Anisometropia is characterized by a refractive inter ocular difference greater than 1.00 dioptre (D). It is the main cause of amblyopia and loss of binocular vision. Its prevalence depends on several factors, being different values in different geographical areas of the world and in different age groups. Objectives To estimate the frequency of anisometropia in children of the 2nd cycle of Basic Education. Methodology A total of 519 children attending the 5th and 6th school years, from Covilhã schools, from urban and rural areas, aged between 9 and 14 years (10.8 ± 0.8 years) were enrolled in the study. The refractive error was measured with a paediatric auto refractometer (Plusoptix), without cycloplegic and in binocular conditions. Anisometropia was defined as the inter ocular difference in spherical equivalent or cylindrical, greater than 1.00 D and a separate analysis for values greater than 2.00 D. Results The sample was symmetrically divided into genders (50.9% Male), between school grade (53% 5th year) and higher in urban areas (70.1%). The prevalence of anisometropia with cut-off points of 1.00 D and 2.00 D was 12.3% and 5.0%, respectively. There was a higher prevalence among males, in rural areas and in 6th grade. The Chi-square test (□2) shows that the difference is statistically significant only between years of schooling, with a higher prevalence in the 6th grade (p = 0.001). Conclusion There was a slightly higher prevalence of spherical and cylindrical anisometropia (5% and 12.3%) than is reported in the literature (rates between 4.4% and 9.4%). The 6th school year presented rates significantly higher than the 5th year, which points out that anisometropia increases with age, as was also advocated by other authors. Visual screening programs in adolescence for the detection of anisometropia are fundamental, since their timely correction allows to safeguard the binocular vision.

scholarly journals The Path where our Lifestyle is Taking us: Shift in Onset of Non-Communicable Diseases

2021 ◽  
Vol 8 (5) ◽  
pp. 121-125
Author(s):  
Bhatt, Y. ◽  
Kulshrestha, K.
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Health Care Quality ◽  
Healthy Lifestyle ◽  
Age Groups ◽  
Communicable Diseases ◽  
Care Quality ◽  
Age Group ◽  
Non Communicable Diseases ◽  
Age Related

Globally, the burden of non-communicable diseases (NCDs) is rising. To assess the trends in the age of occurrence of non-communicable, age-related diseases this study was performed in the three districts of Uttarakhand, in both rural and the urban settings. The study comprised of both male and female subjects between the age group of 15 years to 55 onwards. The respondents were categorized into three age groups range as- 15-35 years, 36-55 years, and above 56 years. Starting from the age of 5 years, each age group is also categorized decade-wise e.g. age group of 56 years and above was divided into six decades starting from the age of five years.  The present study showed that the occurrence of age-related diseases, among the age group 56 years and above, was seen during their 40s while in the other two age groups, occurrence was recorded in the 30s itself. Comparing the third decade, i.e., the 30s of all the three age groups, none of the subjects was suffering from age-related disease among 56 years and above while among 36-55 years of age, 0.57 percent and among 15-35 years of age, 1.35 percent of subjects suffered from hypertension. The occurrence of these diseases was more in the urban areas as compared to rural areas. These results throw an insight onto the necessity for government bodies to focus on key factors leading to this trend, improving health care quality, and emphasis on a healthy lifestyle.

scholarly journals Comparative study to determine self-medication practice and pattern in urban and rural areas of Etawah district

2019 ◽  
Vol 7 (1) ◽  
pp. 216
Author(s):  
Nishant Singh ◽  
Naresh Pal Singh ◽  
Pankaj Kumar Jain ◽  
Vaibhav Singh ◽  
Shailendra Chaurasiya ◽  
...  
Keyword(s):  
Rural Area ◽  
Rural Areas ◽  
Urban Areas ◽  
Nuclear Family ◽  
World Health ◽  
Common Reason ◽  
Cluster Sampling ◽  
Age Group ◽  
Self Medication ◽  
Urban And Rural Areas

Background: According to William Osler, a great feature which distinguishes man from animals is the desire to take medicine. Self-medication is an age old practice. According to World Health Organization guidelines “self-medication is defined as use of medicinal products by the individuals to treat self-recognized disorders or symptoms, or the intermittent or continuous use of a medication prescribed by a physician for chronic or recurring diseases or symptoms.Methods: It was a cross sectional study, which was conducted among residents of urban and rural areas of Etawah district, Uttar Pradesh by using 40×5 cluster sampling. The data was collected by using pre designed, semi-structured questionnaire. Proforma included socio- demographic profile, practice of self- medication and pattern of self-medication.Results: Most of the participants who indulged in self-medication in urban areas 69.5% and rural areas 65% belong to the age group 20-39 years. Majority of the participants (51.0%) in urban areas belonged to the nuclear family while most of the participants (50%) belonged to joint family followed by nuclear family (40%) in rural areas. most common reason for self-medication in urban area was the availability of old prescription which is present in 30.0% (60) of subjects but in rural area most common reason for self-medication was high fee of doctor which was 29.0% (58).Conclusions: Most common age group indulged in self-medication was 20-39 years. Most common reason for self-medication was availability of old prescription at home while in rural area, high fees of doctor was the common reason for self-medication.

scholarly journals T. gondii Infection in Urban and Rural Areas in the Amazon: Where Is the Risk for Toxoplasmosis?

2021 ◽  
Vol 18 (16) ◽  
pp. 8664
Author(s):  
Rafaela dos Anjos Pinheiro Bogoevich Morais ◽  
Ediclei Lima do Carmo ◽  
Wanda Silva Costa ◽  
Rodrigo Rodrigues Marinho ◽  
Marinete Marins Póvoa
Keyword(s):  
Rural Areas ◽  
Urban Areas ◽  
Animal Health ◽  
Brazilian Amazon ◽  
Infection Prevalence ◽  
Age Group ◽  
Urban And Rural Areas ◽  
Different Strains ◽  
Area Expansion ◽  
Parasite Exposure

Toxoplasmosis, an infection caused by Toxoplasma gondii, which is found worldwide, can affect human and animal health in different ways. This study aimed to estimate the infection prevalence in humans and to determine risk factors related to urban and rural areas in a municipality in the Brazilian Amazon where an outbreak had been registered. Blood samples for serological analysis were obtained, and interviews were performed to fill out an epidemiological questionnaire. A total of 1140 individuals were included, of which 70.6% (804/1140; 95% CI: 67.9–73.2%) were positive for IgG anti-T. gondii antibodies. In rural areas, the prevalence was 62.6% (95% CI: 58.9–66.3%), while in urban areas, it was 81.9% (95% CI: 78.4–85.4%). The risk of becoming infected in urban areas was 2.7 times higher (95% CI = 2.0–3.6%) than that in rural areas. When comparing the prevalence in the age group from 1 to 10 years in both areas, the rate was 28.6% (42/147; 95% CI: 21.3–35.9%) for rural areas and 69.4% (61/88; CI 95%: 59.7–79.0%) for urban areas. Therefore, it is concluded that parasite exposure starts in the first years of life in urban areas and that disordered urban area expansion may cause an increase in exposure to the different strains of T. gondii present in the Amazon.

scholarly journals Prevalence of SARS-CoV-2: An age-stratified, population-based, seroepidemiological survey in Islamabad, Pakistan

2021 ◽  
Author(s):  
Mirza Amir Baig ◽  
Jamil Ahmed Ansari ◽  
Aamer Ikram ◽  
Mumtaz Ali Khan ◽  
Muhammad Salman ◽  
...  
Keyword(s):  
Public Health ◽  
Rural Areas ◽  
Disease Transmission ◽  
Urban Areas ◽  
Age Groups ◽  
Significant Risk ◽  
Cluster Sampling ◽  
Molecular Testing ◽  
Age Group ◽  
Co Morbidity

Introduction: Serological surveys are valuable tools to evaluate the extent of disease transmission, measuring preventive effectiveness and proportion of asymptomatic individuals. This age-stratified, serological survey was aimed to measure the COVID-19 distribution and determinants in district Islamabad of Pakistan. Methodology: Three-stage cluster sampling, using population proportionate to size technique, starting with a random number was used. A structured, pretested questionnaire was used after taking informed written consent, to gather demographic, risk factor information. Results: Seroprevalence was found 16.5% (AR: 16.5%/100,000). The mean age was 35 (sd:16 Years). The majority were male (64%), self-employed (29%), and had primary level education (33%). The highest seroprevalence was found in the 21-30 years age group (24.8%) while the 41-50 years age group showed the highest attack rate (112.9/100,000 population). The proportion of the population tested that were asymptomatic was 69% (n=711) while the most frequently reported sign/symptom was cough (99%) followed by fever (20%). No known co-morbidity was reported in 86% (n=884) of respondents while hypertension remained the most reported condition (8%). High seroprevalence was observed in urban areas (12.3%) compared to rural union councils (6.4%). Visiting a house where COVID-19 case was isolated (OR 2, CI 1.38-2.84, P< 0.001), history of contact with a known case of COVID-19 (OR 1.42, CI 1.11-1.82, P=0.005), and attending a mass gathering (OR 1.21, CI: 1.02-1.42, p=0.02) were significant risk factors associated with contracting an infection. A Chi-Square test of independence showed significant protection while using regular hand hygiene practices (6.5; p<0.05) and regular usage of face masks (8.6; p<0.05). Conclusion: Seroprevalence gives a direct estimation of population groups exposed to the virus. A remarkable difference in prevalence is found in urban and rural areas, extreme age groups, and socioeconomic statuses, suggesting targeted public health interventions. Sero-studies are affordable counterparts of molecular testing where quick estimation, prevention effectiveness, and data-driven public health policies are priorities.

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