• Asian Pacific Journal of Cancer Prevention
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• v.16 no.13
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• pp.5153-5158
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• 2015

Infection with high-risk human papillomavirus (HR-HPV) is an essential cause of cervical cancer. Because of substantial geographical variation in the HPV genotype distribution, data regarding HPV type-specific prevalence for a particular country are mandatory for providing baseline information to estimate effectiveness of currently implemented HPV-based cervical cancer prevention. Accordingly, this review was conducted to evaluate the HR-HPV genotype distribution among Thai women with precancerous cervical lesions i.e. cervical intraepithelial neoplasia grade 2-3 (CIN 2-3), adenocarcinoma in situ (AIS), and invasive cervical cancer by reviewing the available literature. The prevalence of HR-HPV infection among Thai women with CIN 2-3 ranged from 64.8% to 90.1% and the three most common genotypes were HPV 16 (38.5%), HPV 58 (20.0%), and HPV 18 (5.5%). There were high squamous cell carcinoma/CIN 2-3 prevalence ratios in women with CIN 2-3 infected with HPV 33 and HPV 58 (1.40 and 1.38, respectively), emphasizing the importance of these subtypes in the risk of progression to invasive cancer among Thai women. Data regarding the prevalence and genotype distribution of HR-HPV in Thai women with AIS remain unavailable. Interesting findings about the distribution of HPV genotype in cervical cancer among Thai women include: (1) a relatively high prevalence of HPV 52 and HPV 58 in invasive squamous cell carcinoma; (2) the prevalence of HPV 18-related adenocarcinoma is almost double thepreviously reported prevalence, and (3) 75% of neuroendocrine carcinomas are HPV18-positive when taking into account both single and multiple infections.

• Journal of Korean Biological Nursing Science
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• v.20 no.4
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• pp.261-269
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• 2018

Purpose: The purpose of this study was to investigate the prevalence of metabolic syndrome and diagnostic components in adult women. Methods: The subjects of this study were 12,016 women that were aged twenty years or older and underwent an annual health check-up for National Health Insurance Service (NHIS) from 2009 to 2013. Data including blood pressure, waist circumstance, fasting glucose, triglyceride, and high density lipoprotein cholesterol (HDL-C) were received from the NHIS. This data was analyzed through the use of descriptive statistics, ${\chi}^2$-test, and multiple logistic regression. Results: The prevalence of metabolic syndrome and diagnostic components increased with age. In the five diagnostic components of the metabolic syndrome, the prevalence of low HDL-C was highest in 20s to 40s. The prevalence of high blood pressure was highest in the people aged fifty or older. The risk of metabolic syndrome in 2013 was higher in women with abnormal diagnostic component of metabolic syndrome in 2009 and highest in women with abnormal waist circumstance in 2009. Conclusion: There was a need to investigate the prevalence of metabolic syndrome components according to age. Education on metabolic syndrome was required for those that had one or two abnormal diagnostic components. The risk of abdominal obesity related to metabolic syndrome needs to be emphasized. Moreover the education for management of abdominal obesity also needs to be emphasised.

• Korean Journal of Cognitive Science
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• v.26 no.3
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• pp.357-375
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• 2015

In our daily life, the probability of target prevalence in visual search varies from very low to high. However, most laboratory studies of visual search used a fixed probability of target prevalence at 50%. The present study examined the properties of information processing during visual search where the probability of target prevalence was manipulated to vary from low (20%), medium (50%), to high (80%). The search items were made of simple shape stimuli, and search accuracy, signal detection measures, and reaction times (RTs) were analyzed for characterizing the effect of target prevalence on the information processing strategies for visual search. The analyses showed that the rates of misses increased whereas those of false alarms decreased in the search condition of low target prevalence, whereas the pattern was reversed in the high prevalence condition. Signal detection measures revealed that the target prevalence shifted response criterion (c) without affecting sensitivity (d'). In addition, RTs for correct rejection responses in the target-absent trials became delayed as the prevalence increased, whereas those for hits in the target-present trials were relatively constant regardless of the prevalence. The RT delay in the target-absent trials indicates that increased target prevalence made the 'quitting threshold' for search termination more conservative. These results support an account that the target prevalence effect in visual search arises from a shift of decision criteria and the subsequent changes in search information processing, while rejecting the account of a speed-accuracy tradeoff.

• Journal of Nutrition and Health
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• v.26 no.2
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• pp.182-188
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• 1993

This study was accomplished to investigate the prevalence of obesity and the factors related to obesity of high school girls in the large cities from May 20 to July 10 1990. In this study, three hundred eighty nine high school girls were chosen from high schools located in Seoul and Inchon. Anthropometry including weight, height, and skinfold thickness (triceps) were measured, and dietary intakes were calculated according to food composition tables. Means of the obesity index, food pattern, nutrients intakes were compared by Pearson's correlation coefficient. Nutrient intakes of the groups categorized by tricep skinfold thickness were compared by means of Duncan's multiple range test. Prevalence of obesity was 16.7%, 3.6%, and 20.8% by criteria of skinflod thickness, BMI, and Rohrer Index, respectively. Most of the subjects had three meals and took snacks two times per day 23.9% of the subjects were taking nutrient supplements of which vitamin supplement was the most popular. Food habit of subjects such as frequency of snack and bedtime meal were positively related to fatness. Nutrient intakes of the obese groups classified by tricep skinfold thickness, tended to consume more calories than another tricep category groups. Therefore, it could be concluded that prevalence of obesity in this subject was higher than the one for the past years, and it was more profound in girls who had a poor food habits and high calorie intakes. Thus, these results suggested that a good food habits and adequate nutrient intakes are essential to prevent the obesity of high school girls.

• Clinical and Experimental Pediatrics
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• v.63 no.2
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• pp.34-43
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• 2020

Phenylketonuria is a disease caused by congenital defects in phenylalanine metabolism that leads to irreversible nerve cell damage. However, its detection in the early days of life can reduce its severity. Thus, many countries have started disease screening programs for neonates. The present study aimed to determine the worldwide prevalence of classic phenylketonuria using the data of neonatal screening studies.The PubMed, Web of Sciences, Sciences Direct, ProQuest, and Scopus databases were searched for related articles. Article quality was evaluated using the Joanna Briggs Institute Critical Appraisal Evaluation Checklist. A random effect was used to calculate the pooled prevalence, and a phenylketonuria prevalence per 100,000 neonates was reported. A total of 53 studies with 119,152,905 participants conducted in 1964-2017 were included in this systematic review. The highest prevalence (38.13) was reported in Turkey, while the lowest (0.3) in Thailand. A total of 46 studies were entered into the meta-analysis for pooled prevalence estimation. The overall worldwide prevalence of the disease is 6.002 per 100,000 neonates (95% confidence interval, 5.07-6.93). The meta-regression test showed high heterogeneity in the worldwide disease prevalence (I²=99%). Heterogeneity in the worldwide prevalence of phenylketonuria is high, possibly due to differences in factors affecting the disease, such as consanguineous marriages and genetic reserves in different countries, study performance, diagnostic tests, cutoff points, and sample size.

• Korean Journal of Clinical Laboratory Science
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• v.39 no.2
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• pp.96-103
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• 2007

This study was carried out on 14,443 subjects (8,706 men, 5,737 women ; between 20-80 years of age, mean age $41.8{\pm}9.16$) who visited the health promotion center of one university hospital. Serum $T_3$, $T_4$ and TSH concentrations were measured with CIA using commercial kits on ADVIA Centaur Assay. The prevalence of thyroid disfunction was high in elderly people and women like in western countries. The results were as follows; 1. The prevalence of overt hyperthyroidism was 4.8/1,000 population (men 4.1/1,000, women 5.9/1,000) and was higher in women than in men. 2. The prevalence of subclinical hyperthyroidism was 10.7/1,000 population (men 9.0/1,000, women 13.2/1,000) with peak prevalence at the age group 50, 60 and was higher in women than in men. 3. The prevalence of overt hypothyroidism was 0.5/1,000 population (men 0.5/1,000, women 0.5/1,000). The prevalence increased with age and was significantly higher in women in the age group over 60 years. 4. The prevalence of subclinical hypothyroidism was 12.6/1,000 population (men 6.0/1,000, women 22.7/1,000) and was as high as about 4 times in women than in men. 5. The prevalence of thyroid dysfunction was higher in women than in men in all the age groups, and was higher in the age group 50, 60 years than in any other age group.

• Quality Improvement in Health Care
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• v.27 no.1
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• pp.10-19
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• 2021

Purpose: This study was designed to investigate that the prevalence of Post-traumatic stress disorder (PTSD) and occupational environmental factors that contribute to the developing of PTSD in workers who worked in emergency room in Korea. Methods: This study is a multicenter cross-sectional study that was conducted in three emergency rooms. Data was collected by self-response method through questionnaire. The Impact Event Scale-Revised was used to screen the high-risk group of PTSD. Univariate and multivariate regression analysis was used to identify the factors associated with the developing of high-risk group of PTSD. Results: Total 211 subjects responded to the questionnaire. Of these, 170 subjects experienced psychological trauma event (PTE) in the working environment. And 60 subjects classified as high risk group of PTSD, so a prevalence of high risk group for PTSD was 28.4%. Factors related to the high risk group of PTSD were the frequency of psychological trauma events experienced over the past 1 year and the high score of QIDS-SR16. Conclusion: The prevalence of high risk group for PTSD among emergency room workers in Korea is very high. This may adversely affect the safety of patients, so early screening and intervention are necessary.

• Asian Spine Journal
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• v.12 no.6
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• pp.1146-1153
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• 2018

Many studies have investigated the prevalence of neck pain (NP) and its risk factors in the general population. However, the prevalence of NP among athletes has not yet been systematically investigated. We aimed to systematically review the prevalence of NP in athletes. A comprehensive search was conducted in September 2015 using PubMed, Ovid SP Medline, ISI, and Google Scholar. We included studies in English that reported the prevalence of NP in an athletic population during a defined period of time. We assessed the risk of bias in studies due to various definitions of NP, response rates, and reliability of the study instruments. Two reviewers independently assessed the studies' quality and performed data extraction. Of 1,675 titles identified, eight articles were assessed for risk of bias, and six with low or moderate risk were included. NP was shown to be prevalent in athletes, with a 1-week prevalence ranging from 8% to 45%, a 1-year prevalence ranging from 38% to 73%, and a lifetime prevalence of about 48%. The prevalence of NP in athletes is high. More studies regarding the prevalence and risk factors of NP may be useful for planning educational programs and developing appropriate rehabilitation protocols and preventive guidelines. Researchers are encouraged to perform epidemiologic studies in athletes with a low risk of bias.

• Journal of Preventive Medicine and Public Health
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• v.19 no.2 s.20
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• pp.293-306
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• 1986

A Health Interview Survey at Chuncheon city was conducted to assess level of illness by stratified random sampling method. Sample size was 6,007 and the prevalence of illness in period of 15 days was studied. 1) Prevalence rate of illness among Chuncheon citizen was 20.8 percent, and that of acute condition was 10.8 percent and chronic condition, 10.0 percent. 2) There was significant difference in prevalence rate by sex, especially the prevalence rate of chronic illness. 3) High positive correlation was noted between aging and prevalence rate of chronic illness. But negative correlation was noted in case of acute illness. 4) Multiple regression analysis on morbid state by socioeconomic variables was not seen to be appropriate for this survey, especially the analysis of acute illness. 5) Estimation of anual prevalence rate could not be possible because of seasonal variation of disease prevalence.

• Journal of Korean Neurosurgical Society
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• v.53 no.2
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• pp.89-95
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• 2013

Objective : Similar to back pain, neck pain has recently shown to have increasing prevalence. Magnetic resonance imaging (MRI) is useful in identifying the causes of neck pain. However, MRI shows not only pathological lesions but also physiological changes at the same time, and there are few Korean data. The authors have attempted to analyze the prevalence of disc degeneration in highly selective asymptomatic Korean subjects using MRI. Methods : We performed 3 T MRI sagittal scans from C2 to T1 on 102 asymptomatic subjects (50 men and 52 women) who visited our hospital between the ages of 14 and 82 years (mean age 46.3 years). All images were read independently by three observers (two neurosurgeons and one neuroradiologist) who were not given any information about the subjects. We classified grading for cervical disc herniation (HN), annular fissure (AF), and nucleus degeneration (ND), using disc degeneration classification. Results : The prevalence of HN, AF, and ND were 81.0%, 85.9%, and 95.4%, respectively. High prevalence of HN, AF, and ND was shown compared to previous literature. Conclusion : In asymptomatic Korean subjects, the abnormal findings of 3 T MRI showed a high prevalence in HN, AF, and ND. Several factors might play important roles in these results, such as population-specific characters, MRI field strength, and disc degeneration grading system.