• 제목/요약/키워드: mean test statistic

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식생활 라이프스타일에 따른 비만도와 외식선택속성에 관한 연구 - 부산지역 대학생을 중심으로 - (A Study on Obesity Index and Attributes of Selecting Places to Eat Out by Food-Related Lifestyle Types - Focusing on Pusan University Students -)

  • 이종호
    • 한국조리학회지
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    • 제18권4호
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    • pp.47-58
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    • 2012
  • 본 연구는 부산지역 K대학교 학생들을 대상으로 식생활 라이프스타일유형에 따른 군집을 도출하고 각 집단과 외식선택속성과 비만도와의 차이를 고찰하고자 연구를 진행하였다. 연구의 목적을 달성하기 위하여 통계프로그램 PASW Statistic 18.0(Predictive Analytics Software)을 이용하여 빈도분석, 요인분석 및 신뢰도분석, t-test, ${\chi}^2$-test, 비 계층적 군집분석과 ANOVA을 실시하였다. 남자 대학생들의 평균키는 175.59 cm, 체중은 69.53kg이고, 여자 대학생들의 평균키는 162.81 cm, 체중은 53.42kg으로 나타내었다. 남학생 체질량지수를 저체중이 1.7%, 정상체중은 64.6%, 과체중 19.7%이고, 비만은 14.0%로 나타났다. 여학생 체질량지수는 저체중이 22.9%. 정상체중은 62.7%, 과체중이 8.5%, 비만은 5.9%를 나타내었다. 식생활라이프스타일 항목은 건강추구, 안전성추구, 분위기추구, 미각추구, 서양음식추구요인으로 추출되었고, 외식선택속성은 음식의 질과 서비스, 합리적인가격, 접근성과 분위기, 먹어본 경험 요인으로 추출되었다. 식생활라이프스타일은 군집1은 [식생활 무관심형 집단] 군집2는 [건강지향형 집단] 군집3은 [건강무관심형 집단]으로 군집 명을 부여하였다. 식생활라이프스타일 군집과 외식선택속성 요인간의 차이분석에서 군집1은 먹어본 경험에서 높은 평균값을 나타내었고, 군집2는 음식과 서비스의 질에서 높은 평균값을 나타내었고, 군집3은 접근선과 이미지에서 높은 평균값을 나타내었다.

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암 환자의 삶의 의미와 영적고통과의 관계 (A Study on the Relationship between the Meaning of Life and Spiritual Distress in Cancer Patients)

  • 강경아
    • 대한간호
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    • 제37권4호
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    • pp.85-95
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    • 1998
  • Because cancer is not curable, patients who suffer from the cancer disease may have physical, psychological and spiritual problems for the rest of their lives. Especially, when cancer patients do not have the meaning in their lives, they will experience spiritual distress seriously. This study was conducted to provide a basis for nursing intervention strategies to minimize the cancer patients' spiritual distress and understand the relationship between the meaning of life and the spiritual distress in cancer patients. The samples were composed of 62 cancer patients who were inpatients or outpatients of three university hospital and one general hospital in Seoul. Data collection was carried out from January 10,1998 to May 30, 1998. Data were analyzed using a SAS program for descriptive statistic, Pearson correlation, t-test, ANOVA, LSD test and linear regression. The results were as follows; 1. The scores on the meaning of life scale ranged from 20 to 140 with a mean of 94. 16(Standard error: 2.79). 2. The scores on the spiritual distress scale ranged from 13 to 91 with a mean of 62. 29(Standard error: 1.38). 3. There were significant correlations between the meaning of life and the spiritual distress(r=.53. p=.00). 4. The linear regression analysis showed that the meaning of life explained 29% of the spiritual distress. 5. In the degree of the meaning of life and the spiritual distress according to the general characteristics, the level of the meaning of life in cancer patients were different by age(F=3. 42, p=.03), marriage status(F=6.06, p=.00), religion(F=4.21, p=.01), thought about treatment of cancer(F=3.76, p=.04). And the level of the spiritual distress in cancer patients were different by religion(F=7.56, p=.00). In conclusion, the meaning of life was identified as important variable that was contributed to reduce the spiritual distress in cancer patients.

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부모의 양육지식과 실천 도구 개발 예비연구 (A Pilot Study on Korean Version Development of the Rearing Knowledge and Practice for Infant Parents)

  • 김경운
    • 한국산학기술학회논문지
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    • 제18권12호
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    • pp.485-493
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    • 2017
  • 양육지식은 양육실천에 중요한 관련요인이며 양육지식과 양육실천 정도 사정은 영아기 부모에게 중요하다. 저자는 기 개발된 타당성이 검증된 양육지식 척도(CRKS)와 양육실천 척도(CRPS)의 자국내 도입을 위하여 Saramma와 Thomas가 기 개발한 도구들을 채택하였다. 예비연구가 국제적 언어학적 검증단계에 따라서 수행되었다. 조사대상자는 A의 보건소와 B의 오케타니 마사지실을 방문한 영아 부모 20명이었다. 수집된 자료는 기술통계와 Wilcoxon Rank Sum Test가 도구의 이해도와 일반적 특성에 따른 도구의 평균 정도를 비교하기 위해서 사용되었다. 도구의 신뢰도와 타당도는 Cronbach's alpha, Spearman Correlations을 사용하였다. 대상자의 평균 나이는 33.94(${\pm}2.99$)세였고 영아의 평균 월령은 3.35(${\pm}0.58$)개월였다. CRKS와 CRPS의 이해도는 각각 1.80(${\pm}0.65$)점과 1.33(${\pm}0.54$)점으로 사용하기 쉬웠다. CRKS의 평균점수는 22.50(${\pm}4.89$)점으로 중간점수였고 CRPS의 평균점수는 30.75(${\pm}2.04$)점으로 높았다. CRPS의 Cronbach's alpha는 식이영역이 0.71, 성장과 발달 영역이 0.64, 청결과 보호영역이 0.68, 영아자극 영역이 0.77였다. CRPS의 영아자극과 CRKS의 성장과 발달 영역은 유의한 상관관계가 있었다(r=.530, p=.016). 일반적 특성 중에서 의료인이 비의료인에 비해서 유의하게 CRKS 점수가 높았다(p=0.04). CRKS와 CRPS 척도는 지역사회와 임상실무에서 사용이 간편하고 쉽게 응답할 수 있는 도구로 사용되기를 기대한다.

119구급대원의 감염관리에 대한 인지도와 수행도 관계 연구 (A Study on the level of Recognition and Practices of 119 Emergency Medical Technician about Infection Control)

  • 윤형완;정지연
    • 한국응급구조학회지
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    • 제12권3호
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    • pp.99-113
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    • 2008
  • In order to protect Rescue 119 workers exposed on the spot from potential infection, this study identified their awareness and practices of infection control so that it could help preventing them from infection and also provide basic materials necessary for pre-hospital infection control. This study applied questionnaire survey to total 215 Rescue 119 workers at fire stations in Jeonbuk province, Jeonnam province and Gwangju city from July 14 to Sept. 14, 2006 for the benefit of data collection. The questionnaire about possible associations between awareness and practices of infection control consisted of total 46 times across 6 categories such as washing hands during emergency activities ; fluid therapy and injection ; respirator maintenance; individual hygienics ; disinfectant supplies and equipments maintenance ; and control of infectious wastes. And collected data were processed using SPSS statistic program to analyze frequency and percentage, mean and standard deviation, Pearson's correlation coefficient, t-test and one-way ANOVA. As a result, this study came to the following conclusions : In terms of awareness about infection control, our respondents showed highest awareness about infectious waste control, and also showed highest level of practices in washing hands during emergency activities. Throughout all domains, awareness means were higher than practice means. In particular, infectious waste control was the domain of significant differences between awareness and practices. In terms of associations between awareness and individual characteristics, it was found that female rescue worker group and hospital/general hospital career group (before joining the Rescue 119) showed significantly higher awareness on statistic level. In regard to associations between individual characteristics and practices, it was found that female rescue worker group showed higher level of practices than male group on statistic level. This study also analyzed correlations between rescue workers' awareness and practice of infection control. As a result, it was found that the higher awareness was in correlations with the higher practices across all 6 domains including washing hands. In addition, the higher awareness of a questionnaire item was in significantly positive correlations with the higher practice of other items. However, our respondents showed high awareness about anti-infection, but low practices in reality. This indicates necessity of devising possible solutions to improve the practices as much as awareness. Especially, it was noted that major reasons for insufficient practices of infection control guideline come from unhabituated practices and lack of supports for infection-preventing supplies and protective device (mask, etc). Hence, it is necessary to provide more infection-preventing supplies for local rescue workers sufficiently, in parallel with steady habituation of infection control. Furthermore, it is required to manage and study infection control policies even at pre-hospital step in efforts for effective infection control, education and activities.

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엠라크림이 정맥천자 시 통증과 불안에 미치는 영향 (The Effect of topical EMLA Cream for venipuncture on Patients' Pain and Anxiety)

  • 김중경;심문숙;김광환
    • 한국산학기술학회논문지
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    • 제13권9호
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    • pp.4065-4072
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    • 2012
  • 본 연구는 정맥 천자 전 국소 마취제인 엠라크림을 도포하여 침습적 시술 시 발생하는 통증과 불안에 미치는 영향을 확인하여 엠라크림의 임상적 적용을 확대하기 위한 기초 자료를 마련하고자 하였다. 실험군 40명과 대조군 37명을 대상으로 2011년 10월27일부터 11월13일까지 구조화된 설문지를 통하여 일반적 특성, 기질불안, 상태불안, 주관적 통증, 객관적 통증에 관하여 자료 수집을 하였으며, SPSS 15.0 프로그램을 이용하여 ${\chi}^2$-test, t-test, ANOVA, Correlation analysis로 분석하였다. 연구 결과 엠라크림 도포가 통증과 불안 감소에 효과가 있는 것으로 나타났으며, 엠라크림 도포 후 통증과 불안과의 관계에 대해 살펴본 결과 안면 표정, 음성변화, 객관적 통증은 불안과 상관관계를 보이는 것으로 나타났다. 이러한 결과를 통해 임상에서는 환자들에게 침습적 처치로 인한 통증과 불안을 감소시켜줌으로서 의료의 질을 향상시키고 엠라크림의 임상적 적용 확대를 고려해 보아야 할 것이다.

응급실의 소음도와 환자의 인지정도에 관한 연구 (A Study on the Noise Level and Patients' Perception of the Noise in Emergency Department)

  • 정승은;최창하
    • 기본간호학회지
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    • 제5권2호
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    • pp.341-352
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    • 1998
  • The purpose of this study was to provide a bases for comfort of patient through of measuring the noise level in emergency room and grasping the perception to noise of inpatient. Data on noise level through sound level meter in ER and patients' perception of the noise through a structured questionnaire and were collected from August 21 to September 5 in 1998. And collected data were analyzed with SAS statistics progeam, descriptive statistic, t-test and ANOVA. The result of examination is as follows : 1. Among a noise level of measured highest was 64.6dB(A) in 'rounding of medical teams', the lowest was 54.8dB(A) in 'traffic noise from outside'. 2. The mean score of noise perception was 0.93. Among a kind of noise reported by the subjects, that which ranked highest was 'conversation of patients' caregiver and visitors'(1.75). The ranked lowest was 'noise of airconditioner'(0.59). 3. The relationship between perception of noise and subjects' characteristics was not significient. Therefore, based on this result, ways require to decrease the noise level in emergency department.

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Statistical Evaluation of Smoke Analysis Technique through Asia Collaborative Study V.

  • Ra, Do-Young;Rhee, Moon-Soo;Kim, Yoon-Dong;Hwang, Keon-Joong
    • 한국연초학회지
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    • 제20권1호
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    • pp.108-114
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    • 1998
  • This study was conducted to evaluate the techniques or analyzing tobacco smoke by statistical treatment method for the analytical data through Asia Collaborative Study V. In addition to five smoke components analysis, consisting of TPM, water, nicotine, NFDPM, and puff count of four cigarettes samples, statistical parameters such as mean, standard deviation, box-and-whisker plots, h plots, k plots, regression coefficients, reproducibility (R), and repeatability (r) were also calculated. Analysis of water content of cigarette smoke was the most difficult task, whereas puff count analysis was the easiest as well recognized by all laboratories. Analysis of nicotine and puff count accounted for both the lowest and the highest variation among four parameters. The water coefficients indicated more randomness or variation in the slops. The NFDPM data exhibited both types of deviations from linearity. Water content of sample D indicated the highest difference between two single results and between two interlaboratory test results. As a whole, KGTRI ranked higher in the analytical techniques for statistical evaluation of results when compared with the practices of 28 other laboratories.

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Study on Genetic Diversity of Six Duck Populations with Microsatellite DNA

  • Wu, Yan;Liu, Xiao-Lin;Hou, Shui-Sheng;Huang, Wei
    • Asian-Australasian Journal of Animal Sciences
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    • 제21권6호
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    • pp.776-783
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    • 2008
  • In this study, we investigated the genetic diversity and phylogenetic relationship of six duck populations by employing the genetic polymorphisms of 20 microsatellites. The parameters used in this study included number of alleles, average effective numbers of alleles (E) and average rates of heterozygosity of each population. The results showed that all the microsatellite loci were highly polymorphic except that the locus AJ515896 in Muscovy duck was 0. The average PIC (0.762), average h (0.7843) and average E (5.261) of the six duck populations were all high, indicating that the gene polymorphisms and genetic diversity were high. The test of Hardy-Weinberg equilibrium showed that the six populations in this study were all in Hardy-Weinberg disequilibrium. The F-statistic analysis results showed the range of FST was from 0.0205 (AJ515895) to 0.2558 (AJ515896). The mean FST was 0.0936. Phylogenetic study revealed that Peking duck (Z1 and Z4), Shaoxing duck, Cherry Valley duck and Aobaixing duck were clustered in one group, while the Muscovy duck was clustered in one group alone. The phylogenetic relationships among different populations were in accordance with their breeding history and distribution. Our data suggested that the 20 microsatellite loci were effective markers for analysis of genetic relationships among duck populations.

Application of deterministic models for obtaining groundwater level distributions through outlier analysis

  • Dae-Hong Min;Saheed Mayowa Taiwo;Junghee Park;Sewon Kim;Hyung-Koo Yoon
    • Geomechanics and Engineering
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    • 제35권5호
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    • pp.499-509
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    • 2023
  • The objective of this study is to perform outlier analysis to obtain the distribution of groundwater levels through the best model. The groundwater levels are measured in 10, 25 and 30 piezometers in Seoul, Daejeon and Suncheon in South Korea. Fifty-eight empirical distribution functions were applied to determine a suitable fit for the measured groundwater levels. The best fitted models based on the measured values are determined as the Generalized Pareto distribution, the Johnson SB distribution and the Normal distribution for Seoul, Daejeon and Suncheon, respectively; the reliability is estimated through the Anderson-Darling method. In this study, to choose the appropriate confidence interval, the relationship between the amount of outlier data and the confidence level is demonstrated, and then the 95% is selected at a reasonable confidence level. The best model shows a smaller error ratio than the GEV while the Mahalanobis distance and outlier labelling methods results are compared and validated. The outlier labelling and Mahalanobis distance based on median shown higher validated error ratios compared to their mean equivalent suggesting, the methods sensitivity to data structure.

수산물 시장에서의 양식 어류 가격변동성.계절성.요일효과에 관한 연구 - 노량진수산시장의 넙치와 조피볼락을 중심으로 - (Price Volatility, Seasonality and Day-of-the Week Effect for Aquacultural Fishes in Korean Fishery Markets)

  • 고봉현
    • 수산경영론집
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    • 제40권2호
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    • pp.49-70
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    • 2009
  • This study proviedes GARCH model(Bollerslev, 1986) to analyze the structural characteristics of price volatility in domestic aquacultural fish market of Korea. As a case study, flatfish and rock-fish are analyzed as major species with relatively high portion in an aspect of production volume among fish captured in Korea. For analyzing, this study uses daily market data (dating from Jan 1 2000 to June 30, 2008) published by the Noryangjin Fisheries Wholesale Market which is located in Seoul of Korea. This study performs normality test on trading volume and price volatility of flatfish and rock-fish as an advanced empirical approach. The normality test adopted is Jarque-Bera test statistic. As a result, first, a null hypothesis that "an empirical distribution follows normal distribution" was rejected in both fishes. The distribution of daily market data of them were not only biased toward positive(+) direction in terms of kurtosis and skewness, but also characterized by leptokurtic distribution with long right tail. Secondly, serial correlations were found in data on market trading volume and price volatility of two species during very long period. Thirdly, the results of unit root test and ARCH-LM test showed that all data of time series were very stationary and demonstrated effects of ARCH. These statistical characteristics can be explained as a reasonable ground for supporting the fitness of GARCH model in order to estimate conditional variances that reveal price volatility in empirical analysis. From empirical data analysis above, this study drew the following conclusions. First of all, from an empirical analysis on potential effects of seasonality and the day of week on price volatility of aquacultural fish, Monday effects were found in both species and Thursday and Friday effects were also found in flatfish. This indicates that Monday is effective in expanding price volatility of aquacultural fish market and also Monday has higher effects upon the price volatility of fish than other days of week have since it has more new information for weekend. Secondly, the empirical analysis led to a common conclusion that there was very high price volatility of flatfish and rock-fish. This points out that the persistency parameter($\lambda$), an index of possibility for current volatility to sustain similarly in the future, was higher than 0.8-equivalently nearly to 1-in both flatfish and rock-fish, which presents volatility clustering. Also, this study estimated and compared and model that hypothesized normal distributions in order to determine fitness of respective models. As a result, the fitness of GARCH(1, 1)-t model was better than model where the distribution of error term was hypothesized through-distribution due to characteristics of fat-tailed distribution, was also better than model, as described in the results of basic statistic analysis. In conclusion, this study has an important mean in that it was introduced firstly in Korea to investigate in price volatility of Korean aquacultural fishery products, although there was partially a limited of official statistic data. Therefore, it is expected that the results of this study will be useful as a reference material for making and assessing governmental policies. Also, it is looked forward that the results will be helpful to build a fishery business plan as and aspect of producer, and also to take timely measures to potential price fluctuations of fishery products in market. Hence, it is advisable that further studies related to such price volatility in fishery market will extend and evolve into a wider variety of articles and issues in near future.

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