• Journal of the Korean Professional Engineers Association
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• v.16 no.1
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• pp.4-12
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• 1983

Data communication has historically evolved from leased lines, to use of the public telephone network, and eventually to dedicated(exclusive) data networks. It requires an enormous amount of money for establishing a separate and independent data network at the beginning stage. No country has ever adopted this method In the Republic of Korea too the age of leased circuits is passing and it is scheduled to open the public telephone network to the data transmission and to install packet mode processor in the last half of 1983. This paper presents a survey on characteristics of the public telephone network in Seoul and a future development of the data communication of Korea.

• Survey Research
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• v.5 no.1
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• pp.27-49
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• 2004

Recently, in several countries including South Korea, the percentage of households having fixed telephones, which is often called the fixed telephone coverage rates, has decreased due to a rapid spread of mobile phones. It is generally assumed that the lower the rates of coverage, resulting in a major frame undercoverage problem, the greater the possibility of the bias. In this paper, we first take a look at the changes of coverage rates in both fixed telephones and mobile phones in South Korea and examine the coverage rates by sociodemographic characteristics of households. Also, we refer to a change in the level of fixed telephone noncoverage and the resulting problems in the situation. Second, we provide a comparison of the coverage rates for households for some European countries, the United States, Canada etc. Finally, we suggest further research to rise to our research environments increasingly troublesome, owing to the wide spread of mobile phones.

• Communications for Statistical Applications and Methods
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• v.6 no.3
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• pp.761-770
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• 1999

A combination procedure of successive occasions sampling and randomized response method is investigated. Randomized response technique is very simple for use in a telephone survey of a sensitive subject. In the suggested randomized response method. the interviewee replies "yes" or "no" to a randomly selected question and the investigator can estimate the proportion of "yes" or "no" answer. When this procedure is used on successive occasions, not only the proportion supporting a candidate and the time change in this supporting proportion can be derived but also the voters' swing in the trend of voters' support can be estimated. A numerical example is given to show how the suggested sampling strategy can be applied to a practical telephone survey.

• Journal of Acupuncture Research
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• v.22 no.5
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• pp.141-150
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• 2005

Objectives : This study was accomplished in order to find out how Korean medical doctors take acupuncture prescription for knee osteoarthritis in clinical practice Methods : The survey questions were developed by the consensus from 4 professors and 10 residents who major in acupuncture & moxibustion for developing clinical trial protocol on individualized acupuncture treatment for knee osteoarthritis. 206 persons having more than 10 years experience were randomly selected from a list of Korean medical doctors. Telephone interviews with them were conducted by the well-trained interviewers between May 21 and May 27 in 2005. Results : 139 of 206 Korean medical doctors made an acupuncture prescription prior to treatment of knee osteoarthritis. 103 of 139 Korean medical doctors used both local and remote points, and 26 of them used remote points only, and 10 of them used local points only. In case of doctors who use remote points, the five element (45 of 129) or Saam (28 of 129) acupoints were used dominantly, and its was based on the pattern identification of the Jangbu organs related with the pain (56 of 129) or of the pain location (35 of 129). Conclusion : This study showed that Koran medical doctors prefer to use remote points such as five element or Saam acupoints based on the pattern identification of the Jangbu organs related with the pain or the pain location. These result may be useful for developing protocols for clinical trial on acupuncture on knee osteoarthritis.

• Journal of Society of Preventive Korean Medicine
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• v.17 no.2
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• pp.89-103
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• 2013

Objectives: This study was aimed to contribute to the establishment of base for the development of new health technology in Korean Medicine. Methods: Survey was performed with 200 samples obtained through stratified sampling from the list of members of Association of Korean Medicine. Results: For the question about the recognition of new health technology, 54.0% answered 'yes' and 45.0% answered 'no', For the question about whether using the therapy not listed in the medical care of national health insurance, 43.5% answered 'use', Conclusion: Doctors of Korean Medicine seem to want the enlargement of new health technology in the Korean Medicine.

• Communications for Statistical Applications and Methods
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• v.7 no.3
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• pp.945-953
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• 2000

Since early 1960s, when the telephone survey was used in the research area for he first tie, there has been existed various methods to gather the information by survey. The existing survey methodology called PAPI(Paper-And-Pen Interveiw), due to the appearance of Personal Computer, might well be developed progressively. Mid-1980s, Internet was advanced remarkably in terms of technology. from early 1990s, in addition it served as a stepping-stone for progressive collecting method. Internet Survey is now called WWW Survey and expected that it will substitute for most surveys from now on. We explain the role and the characteristics for Internet Survey as one of he various data collecting methods. Furthermore, we draw the futures about questionnaires, data collecting and statistical analysis with it.

• The Korean Journal of Applied Statistics
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• v.25 no.1
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• pp.153-162
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• 2012

We proposed a mixed-mode design with a landline survey and mobile survey as the solution for the problems of election opinion polls by the original telephone survey method, mostly with limited population coverage for young people not living at home and with lower efficiency in selecting valid voters. We numerically verified the applicability of the proposed dual frame survey by analyzing the preliminary opinion poll results of the Seoul mayor by-election of October 26 2011. This research achieved the result that relative standard errors were similar between a mobile RDD sample and landline RDD sample though the variance was bigger in the former. Though the combination of mobile RDD and landline RDD is not found to improve the forecast accuracy, it still is expected to have higher reliability for election polls by expanding the population coverage and compensating the weakness of each survey method.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.295-298
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• 2010

There are three types of survey research system, telephone surveys, online surveys, interviews and so on. Currently most of the survey data have been verified by hand-collecting state in korea. Semi-automated research systems, some companies are using imported from abroad. This paper is the study on the design and implementation of linked research system for global standardization. The system is optimized through customizing for local conditions, as well as professionals for telephone surveys, online surveys, interviews even a normal user can enter the questionnaire easily and quickly. The result data is passed to the customer quickly and accurately. In particular, this system is based on automatic data input and collected provides best efficient analysis and statistics. Office programs and advanced statistical program SPSS is compatible with the maximum benefits for proposed system. Additionally, to achieve the import substitution effect through localization and to propose a global standard the proposed system is designed and implemented.

• The Korean Journal of Applied Statistics
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• v.22 no.2
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• pp.375-385
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• 2009

For 2007 Korea presidential election, most polls by telephone surveys indicated Lee Myung-Bak led the second runner-up Jung Dong-Young by certain margin. The margin between two candidates can be estimated accurately by averaging individual poll results, provided there exists no systematic bias in telephone surveys. Most Korean telephone surveys via telephone directory are based on quota samples, with the region, the gender and the age-band as quota variables. Thus the surveys may result in certain systematic bias due to unbalanced factors inherent in quota sampling. The aim of this study is to answer the following questions by the analytic methods adopted in Huh et al. (2004): Question 1. Wasn't there systematic bias in estimates of support rates. Question 2. If yes, what was the source of the bias? To answer the questions, we collected eighteen surveys administered during the election campaign period and applied the iterated proportional weighting (the rim weighting) to the last eleven surveys to obtain the balance in five factors - region, gender, age, occupation and education level. We found that the support rate of Lee Myung-Bak was over-estimated consistently by 1.4%P and that of Jung Dong-Young was underestimated by 0.6%P, resulting in the over-estimation of the margin by 2.0%P. By investigating the Lee Myung-Bak bias with logistic regression models, we conclude that it originated from the under-representation of less educated class and/or the over-representation of house wives in telephone samples.

• Quality Improvement in Health Care
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• v.9 no.2
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• pp.164-175
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• 2002

Background : The purpose of this study was to investigate the current status of medication compliance of outpatients and to analyze the factors contributing to medication non-compliance Methods : Telephone survey was conducted to the 1,000 outpatients who visited medical institutions during the period from January 2002 to April 2002. Subjects were randomly selected from the telephone directories of the nation, and the socio-demographic characteristics of the respondents such as age, gender and region were matched based on those of outpatients in 2001. Results : The results of survey revealed that those who complied with doctors' regimen in the right way accounted for 82.4%. The compliance increased with the strong belief in the medication, less unwanted side effects and inconvenience, more severity of disease, and lower perceived health status. Compliance rate was also higher in the patients group who experienced the drug education by the pharmacists than those who did not. Conclusion : In order to improve drug compliance, drug information on efficacy, adverse reaction, drug interactions, and basic disease information are to be provided to the patients. Drug education needs to be focused not only on providing knowledge of drugs and diseases but also changing attitude on drug use of the patients.