• The korean journal of orthodontics
• /
• v.24 no.2
• /
• pp.367-394
• /
• 1994

The purpose of this study was to evaluate self perception of occlusal status and recognition for orthodontic treatment as well as the prevalence of orthodontic treatment need objectively and subjectively. 3979 (male 2107, female 1872) school students of age 7~18 were analyzed by questionnaire and clinical examination and the results were as follows, 1. Perception of occlusal status on one's own was more generous than that of orthodontist's and it was affected by the factors such as age, patterns of malocclusion. 2. Recogniuon of subjective need for orthodontic treatment was more generous than that of objective need for the treatment, and factors such as age and sex of patient, parents' age and rate of education, income, occupation, classification of malocclusion and regional discrepancy were influenced. 3. Negative aspect of orthodontic treatment was influenced by the environmental factors. 4. A survey of want for orthodontic treatment showed one's alteration in recognition of the occlusal status with age and esthetic component was much more emphasized than functional component. 5. The multivariate discriminanat analysis for orthodontic treatment group showed that mother's rate of education, classification of malocclusion, demographic characteristics were critical in the determination of treatment group. 6. Test of inter-examiner reliability showed moderate coincidence.

• Journal of Biomedical Engineering Research
• /
• v.25 no.5
• /
• pp.323-328
• /
• 2004

The development of group-specific tissue probability maps (TPM) provides a priori knowledge for better result of cerebral tissue classification with regard to the inter-ethnic differences of inter-subject variability. We present sequential procedures of group-specific TPM and evaluate the age effects in the structural differences of TPM. We investigated 100 healthy volunteers with high resolution MRI scalming. The subjects were classified into young (60, 25.92+4.58) and old groups (40, 58.83${\pm}$8.10) according to the age. To avoid any bias from random selected single subject and improve registration robustness, average atlas as target for TPM was constructed from skull-stripped whole data using linear and nonlinear registration of AIR. Each subject was segmented into binary images of gray matter, white matter, and cerebrospinal fluid using fuzzy clustering and normalized into the space of average atlas. The probability images were the means of these binary images, and contained values in the range of zero to one. A TPM of a given tissue is a spatial probability distribution representing a certain subject population. In the spatial distribution of tissue probability according to the threshold of probability, the old group exhibited enlarged ventricles and overall GM atrophy as age-specific changes, compared to the young group. Our results are generally consistent with the few published studies on age differences in the brain morphology. The more similar the morphology of the subject is to the average of the population represented by the TPM, the better the entire classification procedure should work. Therefore, we suggest that group-specific TPM should be used as a priori information for the cerebral tissue classification.

• Journal of the Korea Fashion and Costume Design Association
• /
• v.11 no.2
• /
• pp.183-195
• /
• 2009

In this study, foot shapes were compared between the men in their 20's and 60's, with the application of 3-dimensional measurement data, and the classification was established in consideration of each of their features. The results are as follows: 1. The investigation into the differences between the groups for the 3-dimensional measurement items of the men in their 20's and 60's indicated that those in their 20's had larger values than those in the 60's age group for all of the length items, while those in the 60's age group had larger values for all of the angle items. 2. The analysis of the constituting factors for the feet of those in their 60's and 20's resulted in the 7 items for the 20's age group and 8 items for those in the 60's age group. 3. The comparison of foot classifications for the 60's age group and 20's age group presented 3 types each for both groups, but the features of each type was different. To examine each characteristic by each type and age group, following can be determined of the 60's age group. Type 1 had a thick instep, high malleolus position and heel and a thick formed ankle. Type 2 the entire foot was small, and the big toe was formed in such a way that it tened to bend toward the inside. When the whole size compared with similar Type 1, Type 3 had a low instep, a low heel, the big toe did not bend and ankle form was thin. The following can be determined of the 20's age group. Type 1 had narrow width a thin ankle and the big toe was formed in such a way that it bended toward the inside. Compared with length, Type 2 had wide width and a thick ankle. Type 3 had a larger overall size, thick instep and wide and the toe was big, but the characteristic of inside and outside of a malleolus position was low and the big toe's form showed no tendencies to bend.

• Journal of Gastric Cancer
• /
• v.7 no.2
• /
• pp.67-73
• /
• 2007

Purpose: There have been several comparative studies that have focused on elderly groups of patients with gastric cancer. However, new criteria are needed for this elderly group because of the longer life span of Korean people. The diagnosis of gastric cancer has sometimes been missed in the young age group. The perioperative risk is high in the elderly age group because of their combined diseases. This study was designed to determine the differences of the clinicopathologic features and the prognosis between young and elderly patients with gastric cancer. Materials and Methods: Eighty patients were divided in two groups and these patients were selected for making comparison between young and elderly groups of patients with gastric cancer. The young age group consisted of 31 patients who were aged 35 years old or less. The elderly age group was made up of 49 patients who were aged 75 years old or above. Results: For the clinicopathologic features, the young age group was characterized by a high incidence of the poorly differentiated type of adenocarcinoma and the diffuse type too, according to the Lauren classification. On the other hand, the elderly group was characterized by a high incidence of poorly to moderate differentiated adenocarcinoma and also the intestinal type according to the Lauren classification. The other clinical differences were unremarkable. Additionally, there was no survival advantage in the young age group compared to the elderly group. Conclusion: There were no clinicopathologic and prognostic differences between both extreme age groups. So, active surgical treatment is recommended even for the elderly patients group.

• Korean Journal of Health Education and Promotion
• /
• v.9 no.1
• /
• pp.66-78
• /
• 1992

This study carried out to investigate consciousness level and situation of treatment by acupuntury (the most important part of oriental medicine) and analyze factors affection to the praetice of exercise. The main purpose of the study was to give basic and necessery data in formulating a policy related to Oriental Medical Treatment. The study was conducted by trained surveyers, for dueller in three cities (Seoul, Busan and Taegu) during 1990. 1. 4 -1990. 1. 23. The result of this study can be summerized as follows. 1. The subject of criticism an investigation for general charactristic be conducted in seoul, Busan and Taegu city area an objective 417 person, 423 person, and 366 person was among those comparatively little more by male was higher rate than female. Those in classification age group evaluation was adopted by age group 10, 20 years old adult 41.3% of most higher rate, next rank was adopted by age group 40 years old (24.9%). 2. An objective of investigation survery was made to personnel were comparative an educated level significantly higher such as college graduated 48.8%, high school graduated 30.1%. And the native comes from urban area, rural, midium and small city rate were shown as 29.6%, 28.4% and 19.9% each other. There by classification of occupational job was shown by students has 27.4% are most higher significantly also there sales and servive field job appearanced 15.1% and expert technical job is 9.0%. Religion is buddist, Christianity, Catholicism all them each other shown 33.6%, 16.7% and 12.4%. An evaluation in economic situation value rate was appearanced by middle class is 61.7% and upper and lower classes are 14.4% and 23.9% with each other and married were 59.2% 3. The people resident in cities area has experience of acupuncture were 70.4% There by classification of an area was shown by Seoul, Busan and Taegu all them other shown 59.7%, 85.2%, 68.1%. According as sex was shown by male 71.7% was more higher than female. According as age was shown by 40 years 85.0% 50 years 77% 20 years old was more higher than 30, 60 years old.

• Journal of Fashion Business
• /
• v.10 no.2
• /
• pp.1-17
• /
• 2006

The purpose of this study is to analyze the street style of women in Dalian, China. 1.185 females of Dalian central street have participated for the survey of this study. This study analyzes characterization of the street style and, classifies it's characteristics by age groups, clothing styles, and clothing items. There are three outcomes due to the aim of this study, 1. In age group classification, every age groups preferred casual style. Especially, young/young adults preferred mix-match styles with various designs. Distinctly, some of missy group preferred fashion trend and others preferred mature style. Also, the preference of missies/madame's group is obviously divided into two groups which pursues fashion trend and not. 2. In clothing style classification, casual styles such as mini-skirts, hot pants, tight t-shirts are mostly in tight silhouette. Also, the main colors are indigo-blue, white, black and point color, which are vivid tone and fluorescent colors. The characteristics of sport casual style contribute the upper garment and the lower garment, which forms a set. Classic styles are divided into two groups of typical formal dress and traditional Qipao dress. The colors of feminine style and textile printing are more sumptuous than other styles. 3. In clothing items classification, the points of the upper garments is the construction of designs, textile printing, ornament with beads, embroidery, and ribbon etc., exposed back. The lower garments like hot pants and mini-skirts are made of jeans. The cargo pants that is made of jean, cotton, luster textile. Also, one-piece dress has the characteristics of tiered and irregular hem line.

• Health Policy and Management
• /
• v.23 no.1
• /
• pp.44-51
• /
• 2013

Background: This study designed to evaluate the homogeneity of Korean diagnosis related group (KDRG) version 3.4 classification system. Methods: The total 5,921,873 claims data submitted to the Health Insurance Review and Assessment Service during 2010 were used. Both coefficient of variation (CV) and reduction in variance of cost were measured for evaluation. This analysis was divided into before and after trimming outliers at the level of adjacent DRG (ADRG), aged ADRG (AADRG) split by age, and DRG split by complication and comorbidity. Results: At the each three level of ADRG, AADRG, and DRG, there were 38.9%, 38.7%, and 30.0% of which had a CV > 100% in the untrimmed data and there were 1.4%, 1.4%, and 1.9% in the trimmed one. Before trimming outliers, ADRGs explained 52.5% of the variability in resource use, AADRGs did 53.1% and DRGs did 57.1%. The additional explanatory power by age and comorbidity and complication (CC) split were 0.6%p and 4.6%p for each, which were statistically significant. After trimming outliers, ADRGs explained 75.2% of the variability in resource use, AADRGs did 75.6%, and DRGs did 77.1%. The additional explanatory power were 0.4%p and 2.0%p for each, which were statistically significant too. Conclusion: The results demonstrated that KDRG showed high homogeneity within groups and performance after trimming outliers. But there were DRGs CV > 100% after age or CC split and the most contributing factor to high performance of KDRG was the ADRG rather than age or CC split. Therefore, it is recommended that the efforts for improving clinical homogeneity of KDRG such as review of the hierarchical structure of classification systems and classification variables.

• International Journal of Costume and Fashion
• /
• v.5 no.1
• /
• pp.1-13
• /
• 2005

Two hundreds of female aged 19 years old and up were recruited to evaluate the postural changes and bilateral variation of asymmetry over age. To find out the differences among the age group, subjects were classified into 5 groups, early young age(19-29), late young age(30-39), early middle age(40-49), late middle age(50-59), and old age(60-). 35 body measurements were taken by the 3-D body scanner which allowed us to take measurements which cannot be measured using traditional methods, including the shape of a cross section, slice area surface are, and volume. Bilateral variations were observed as a function of age; Depth of scapular point level, scapular point to center back, and blade angle. Postural change of anterior cervical angle, upper anterior thoracic angle, upper posterior thoracic angle, posterior cervical angle, and center back/center front ratio were also exhibited. In each measurements, subjects were classified into normal, and abnormal group. Percentiles of abnormal in shoulder line angle, blade angle, neck point $\∼$ acromial point $\∼$ scapular point, posterior cervical angle, and upper posterior thoracic angle were increased over age group. The upper body of lateral view was classified into 3 types of posture based on the previous research; straight, erect(leaning back), and stooped(bent forward). The percentiles of subjects who have straight postures were decreased as a function of age, but those of stooped postures were increased. Subjects who have erect postures did not so. The stooped posture group shows the big cervical fossa angle, anterior cervical angle, posterior cervical angle, upper posterior thoracic angle, and the small upper anterior thoracic angle comparing to the straight and erect posture group. These results could be apply for clothing construction reflecting the changes in back, shoulder, neck, and the bilateral asymmetry according to the target age group.

• Journal of the Korean Society of Costume
• /
• v.52 no.2
• /
• pp.115-124
• /
• 2002

The purposes of this study were to classify somatotype was obtained from the factor scores of the upper half of bodies and analyze the Somatometric characteristics. The sample group (hereinafter referred to as "1st age group") was drawn from bays at the ages 7 to 8 living in Pusan and Kyungsangnam-do. Data from each boy comprised 36 anthropometric measurements and 7 photographic measurements. The study reached following conclusions. 1. According to the analysis to draw Somatometric factors by the 1st age group, seven indicative factors were obtained from measurements of the upper half of bodies. The most significant factor "sectional size" and the second most significant factor "longitudinal size" characterized most aspects of body shape of boys at the ages 7 to 8. 2. According to the analysis of Somatometric characteristics by the upper half of bodies, the 1st age group was categorized into three types : Boys in type 1 had highest stature, biggest frame, broadest shoulders, most protruded chest and shoulder blades and flattest belly : boys in type 2 had shortest stature, smallest frame, sloping shoulders and most protruded belly boys in type 3 had quite high stature and his other measurements were close to the averages of this age group.he averages of this age group.

• The Journal of the Korean dental association
• /
• v.19 no.12 s.151
• /
• pp.1027-1030
• /
• 1981

2065 patients who visited orthodontic department form 1977. 7. 16. to 1981. 9. 30. were surveyed on the yearly tendency of patient distribution and the state of Angle's Classification. The results were as follows: 1. There was increased visiting rate of patient per year except the year 1980. 2. 8-13 age group was 55% in total visiting patient and 20 age over group was 11.0%. 3. Class I malocclusion was 42.3% in total visiting patient, more Class III malocclusion was prevalent than Class II malocclusion.