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Byeon, Haewon,Lee, Yunhwan Triological Foundation [etc.] 2013 The Laryngoscope Vol.123 No.2
<P>This study's objectives were to assess the prevalence rate of laryngeal pathologies in the Korean elderly, and to examine the association of smoking and alcohol consumption with laryngeal diseases.</P>
Haewon Byeon,SungHyoun Cho 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.4
As the elderly are more vulnerable to drinking than young adults, elucidation of the relationship between drinking habits of old age and ADL is an important issue from the perspective of public health science. This study explores the relationship between drinking habits of the elderly and impaired Activities of Daily Living (ADL) and provides basic materials to prevent impaired ADL in the old age. This study analyzed a total of 4,134 elderly people over the age of 65 who participated in 2011 Korean Longitudinal Survey of Aging. Drinking habits were classified into 'no drinking (no drinking experience in lifetime)', 'past drinking (have drinking experience in the past but presently do not drink)' and 'currently drinking'. ADL were classified into ‘normal group’ and ‘Impaired ADL group’. To compare the relationship between alcohol drinking and impaired ALD, the odds ratio (OR) and 95% confidence intervals (CI) were presented using hierarchical logistic regression. As the result of multivariate analysis (adjusted model), even after all confounding variables were adjusted, drinking had significant relationship with ADL impairment. Past drinkers has 6 times more risk of ADL impairment (OR=5.86, 95% CI: 3.07-11.19) than nondrinkers and current drinkers 4 times more risk (OR=3.94, 95% CI: 2.08-7.48) (p<0.05). As drinking in old age is associated with impaired ADL, moderation is required on drinkers for healthy aging.
Haewon Byeon,Heekyung Jin,Seonghun Yu,Sunghyoun Cho 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.10
In numerous epidemiological data, complex sample survey including stratification variables and cluster variables is used as a sampling method. This study compared the differences in mean and significant probability depending on the application method of weights when a chi-square test is performed using Complex Sample Survey Data. Multiple regression and complex sample regression analysis were used as analyzing methods. Youth Risk Behavior Web-based Survey (KYRBS) 2012 was used as data source. As a result of multiple regression and complex sample regression analysis, there were differences in mean and significant probability. The result of this study confirmed that in the analysis of data from complex sample surveys, biased variance (standard error) may be drawn out when using Simple Random Sampling Design. When using complex sampling survey data, in order to minimize the error for samples and to have study results that represent overall population, Complex Sampling Design is required.
Haewon Byeon,Heekyung Jin,Sunghyoun Cho 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.10
This study investigated the characteristics of Parkinson's disease patients' speech through difference of measured cepstral values of speech assignment (sustained vowel phonation, connected speech) between normal adults and patient's with Parkinson's disease in Korea. Subjects of the study were 17 males with Parkinson's disease and control group was 28 healthy male adults without cranial nerve damage or disorder. Speech was collected in sustained vowel phonation and connected speech respectively. The cepstral analysis was used to Analysis of Dysphonia in Speech and Voice (ADSV) Model 5109 of KayPENTAX Corp. Difference of measured value between the groups was confirmed with independent t-test. As the result of independent t-test, there was significant difference in CPP, L/H ratio and CSID of sustained vowel phonation between groups. In contrast, in connected speech, all the measured values have no significant difference between the two groups except CPP. Parkinson's disease patients had difference in speech characteristics depending on speech assignment (sustained vowel phonation, connected speech). Based on the results of this study, analysis on connected speech other than sustained vowel phonation is essentially required in order to precisely identify the speech characteristics Parkinson's disease patients.
Haewon Byeon,Sunghyoun Cho 보안공학연구지원센터 2015 International Journal of Bio-Science and Bio-Techn Vol.7 No.6
This study investigated the effect of Neuromuscular Electrical Stimulation (NMES) on the loudness, pitch and quality of the voice of the males diagnosed with dysphagia by stroke. NMES was conducted on experimental group of 15 patients for 2 months repeatedly while compensatory strategies for dysphagia were performed on control group of 15 patients. Loudness, pitch (F₀) and quality (Jitter, Shimmer, NNE; Normalized Noise Energy) of the voice was measured by using acoustic-phonetic analysis. For statistical test, difference in voice change after the treatments was compared by using analysis of covariance (ANCOVA). As the result of analysis, NMES and compensatory strategies had significant difference in intensity, jitter and shimmer (p<.05) while they did not in pitch and NNE. After the intervention of NMES, voice loudness of the subjects was enhanced and periodicity of vocal cord vibration (Jitter, Shimmer) was stabilized. The results of this study imply that NMES may have effect on enhancement of voice loudness and stabilization of periodicity of vocal cord vibration.