• 한국식품위생안전성학회지
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• 제34권2호
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• pp.199-204
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• 2019

본 연구는 국내 냉동보관창고 보관온도에 대한 조사자료를 활용하여, 온도분포를 추정하였고 이를 미생물 위해 평가(microbial risk assessment; MRA)의 입력변수로 활용할 수 있도록 적정 확률분포 모델을 제시하였다. 조사에 참여한 8곳의 냉동보관창고에서 측정된 공간상의 온도는 최저 $-25.8^{\circ}C$, 최고 $-10.3^{\circ}C$, 평균 $-20.48{\pm}3.08^{\circ}C$이었으며, $-18^{\circ}C$이상의 냉동창고 비율은 20.4%로 조사되었다. 공간별 온도분포는 자연대류를 이용하는 냉동창고의 경우 상단(2.4~4 m) $-22.57{\pm}0.84^{\circ}C$, 중단(1.5~2.4 m) $-22.49{\pm}1.05^{\circ}C$, 하단(0.7~1.5 m) $-22.68{\pm}1.03^{\circ}C$, 최고온도차이는 $1.78^{\circ}C$이었으며, 강제대류를 이용하는 냉동창고의 온도분포는 상단(2.4~4 m) $-17.81{\pm}1.47^{\circ}C$, 중단(1.5~2.4 m) $-17.94{\pm}1.44^{\circ}C$, 하단(0.7~1.5 m) $-18.08{\pm}1.42^{\circ}C$, 최고온도차이는 $0.94^{\circ}C$로 조사되었다. 보관온도는 냉동창고 모든 공간에서 온도가 일정하게 유지되는 것이 아니라 편차가 존재하는 것으로 나타났다. 이상의 수집된 온도자료는 @RISK를 이용, 적합성 검정(GOF: A-D, K-S test)을 수행하여, MRA에서 활용할 수 있는 국내 냉동보관창고 온도분포에 대한 가장 적합한 확률분포모델로 Lognormal [5.9731,3.3483, shift(-26.4281)]이 선정하였다.

• Journal of Korean Academy of Oral Health
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• 제41권4호
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• pp.267-273
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• 2017

Objectives: Unmet needs for dental treatment are one of the potential contributing factors to poor oral health because oral health problems worsen if left untreated. This study aimed to demonstrate the prevalence of and the causes for unmet dental needs, and to evaluate the association between unmet needs for dental treatment and oral health status. Methods: Data on 3,883 subjects aged ${\geq}18years$ from the Korean National Oral Health Survey 2006 were analyzed. Information regarding unmet needs for dental treatment was obtained using standardized questionnaires. Eight trained dentists examined decayed, missing, or filled teeth (DMFT). Multiple regression models were built to assess the association between unmet needs for dental treatment and the DMFT scores. Results: The prevalence of perceived unmet needs for dental treatment was 34.7% among the adult Korean population. Economic constraints were the main cause (38.6%) for unmet dental needs. The average DMFT scores were higher in the subjects with unmet needs for dental treatment than in those without. In individuals with unmet needs for dental treatment within the past 1 year, the number of decayed teeth after adjusting for confounders was likely to be greater by 0.58 and that of missing teeth by 0.27 compared to that in their counterparts with no unmet dental needs in the past 1 year. Conclusions: Perceived unmet needs for dental treatment were significantly associated with poor oral health status among the adult Korean population. Further studies are needed to clarify the direct and indirect effects of unmet needs for dental treatment on an individual's oral health status by investigating critical variables of the causal pathways among perceived dental needs, dental care utilization, and oral health status.

• 한국산학기술학회논문지
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• 제21권12호
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• pp.246-252
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• 2020

본 연구는 제15차(2019년) 청소년 건강행태 조사의 원시자료를 이용하여, 우리나라 다문화 청소년들의 건강 위험 행동들이 주관적인 구강 증상에 미치는 위험요인을 조사하였다. 다문화 가족 범위는 한국인 여성과 결혼한 이주 남성 가족, 한국인 남성과 결혼한 이주 여성 가족의 자녀로 한정 지었으며, 572명을 연구 대상자로 최종 선정하였다. 연구 도구는 사회경제학적 변수로는 성별, 학년, 경제 수준, 학교 성적이 조사되었으며, 건강위험 행태로는 음주, 흡연, 약물 복용, 스트레스, 수면 만족, 자살 생각, 우울 경험, 취침 전 잇솔질 여부가 조사되었고 구강 증상으로는 치아 통증, 잇몸 통증, 입 냄새 여부가 조사되었다. 연구 결과, 치아 통증은 음주, 취침 전 잇솔질, 스트레스, 수면시간, 자살 생각, 우울 경험 여부와 관련성을 나타냈으며, 잇몸 통증은 약물복용, 수면, 자살 생각, 우울 경험에서 관련성을 나타냈다. 그리고, 구취는 약물복용, 취침 전 잇솔질, 스트레스, 자살 생각, 우울 요인과 관련성을 보였다. 건강위험 요인이 구강 증상에 미치는 요인으로는 치아 통증은 음주, 스트레스, 수면시간이 위험요인으로 나타났다. 잇몸 통증은 흡연, 수면, 자살이 위험요인으로 나타났다. 구취는 취침 전 잇솔질 여부와 스트레스가 위험요인으로 나타났다. 결론적으로 청소년들의 구강 건강 증진을 위해 국가 차원의 방과 후 활동이나, 동아리 활동 등의 시간에 구강보건교육 프로그램을 지원하는 정책 제도 마련이 필요하다.

• 한국산업보건학회지
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• 제32권2호
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• pp.116-128
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• 2022

Objectives: The aim of this study was to examine the association of working posture with headache/eye strain in Korean waged workers. Methods: Data were collected from the 5th Korean Working Condition Survey. A total of 30,955 workers participated in this study. A four-items of working postures were measured using a 7-point Likert scale, and we categorized them into three groups ('normal', 'moderate', and 'severe') each 4 items. Headache/eye strain were measured using a self-administrative questionnaire ('yes' vs. 'no'). To examine the relationship between the total working postures score and headache/eye strain, we summed a 4-items of working postures. It was categorized into five groups according to the severity of exposures('normal', 'mild', 'moderate', 'severe', and 'very severe'). The multivariate logistic regression analysis was performed using the IBM SPSS(Ver. 25), and a p<.05 was considered significant. Results: The results show that 'fatiguing and painful posture' and 'posture repetitively using hands or arms' were associated with headache/eye strain after controlling for control variables. The total working posture score was positively associated with headache/eye strain. People with higher levels of the total working posture score were more likely to increase the risk of headache/eye strain compared to those of normal(OR: 1.844, 95% CI: 1.549~2.195 for 'mild'; OR: 2.564, 95% CI: 2.152~3.503 for 'moderate'; OR: 4.140, 95% CI: 3.432~4.994 for 'severe'; OR: 7.613, 95% CI: 5.625~10.304 for 'very severe') (p<.05 for trend). Conclusions: These results indicate that inappropriate working postures might play a crucial role in developing headache/eye strain. It is needed to improve the working environment, especially focusing on reducing inappropriate working posture at the organizational level.

• 한국식품위생안전성학회지
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• 제38권3호
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• pp.89-98
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• 2023

현재, 국내에서는 가공식품인 식용유지에 대한 잔류농약 허용기준이 설정되어 있지 않아 잔류농약은 식용유 품질평가의 사각지대라 할 수 있다. 본 연구에서는 식용유지에서 가열증류법을 이용하여 68종의 농약을 대상으로 추출 및 정제법을 최적화하여 GC-MS/MS 분석법을 확립하였다. 가열증류법은 가열온도 및 시간의 영향을 받았으며 이동상의 역할을 하는 질소의 유량과 용출용매의 종류에는 큰 영향을 받지 않는 것으로 나타났다. 본 연구에서 잔류농약의 결정계수(R²)는 0.99 이상으로 나타났고, 정량한계(LOQ)는 0.01-0.02 mg/L이었으며, 대두유를 이용하여 0.01, 0.02, 0.1, 0.5 mg/L 수준으로 회수율 실험 결과 평균 회수율(n=5)은 66.1-120.0%이었고 상대표준편차는 ±10%이하로 나타났다. 또한 실험실내 일간정밀도는 11%이하로 조사되어, 식품의약품안전평가원의 '식품등 시험법 마련 표준절차에 관한 가이드라인(2016)'에 적합한 수준임을 확인하였다. 따라서 본 연구에서 개발한 시험법은 식용유지의 잔류농약 안전관리를 위한 시험법으로 활용이 가능할 것으로 기대된다.

• 한국산업보건학회지
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• 제34권1호
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• pp.57-66
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• 2024

Objective: Chronic obstructive pulmonary disease (COPD) is characterized by progressive airflow obstruction that is only partly reversible, inflammation in the airways, and systemic effects. This study aimed to investigate the association between low peripheral oxygen saturation levels (SpO₂), and composite indices predicting death in male patients with (COPD). Method: A total of 140 participants with post-bronchodilator FEV₁/FVC ratio less than 0.7 were included. Three composite indices (ADO, DOSE, BODEx) were calculated using six variables such as age (A), airflow obstruction (O), body mass index (B), dyspnea (D), exacerbation history (E or Ex), and smoking status (S). Severity of airflow limitation was classified according to Global Initiative for Obstructive Lung Disease (GOLD) guidelines. SpO₂ was measured by pulse oximetry, and anemia and iron deficiency were assessed based on blood hemoglobin levels and serum markers such as ferritin, transferrin saturation, or soluble transferrin receptor. Results: Participants with low SpO₂ (<95%) showed significantly lower levels of %FEV₁ predicted (p=0.020) and %FEV₁/FVC ratio (p=0.002) compared to those with normal SpO₂ levels. The mMRC dyspnea scale (p<0.001) and GOLD grade (p=0.002) showed a significant increase in the low SpO₂ group. Receiver Operating Characteristic analysis revealed higher area under the curve for %FEV₁ (p=0.020), %FEV₁/FVC(p=0.002), mMRC dyspnea scale (p=0.001), GOLD grade (p=0.010), ADO (p=0.004), DOSE (p=0.002), and BODEx (p=0.011) in the low SpO₂ group. Conclusion: These results suggest that low SpO₂ levels are related to increased airflow limitation and the composite indices of COPD.

• 한국산학기술학회논문지
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• 제15권7호
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• pp.4353-4360
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• 2014

이 연구는 우리나라 노인의 구강건강 개선을 위하여 현재 저작 불편 호소와 치과 보철 필요와의 관련성을 평가하고자 하였다. 연구대상자는 제5기 1차년도 국민건강영양조사에 참여한 65세 이상 노인 1,177명을 대상으로 조사를 실시하였다. 구강검사를 통하여 상실치아와 필요 보철 상태를 파악하였으며, 구조화된 설문도구를 이용하여 사회경제요인, 구강건강 관심도, 저작능력과 발음문제를 조사하였다. 수합된 자료는 SPSS 19.0 프로그램을 사용하여 분석하였다. 우리나라 노인의 42.9%는 저작 불편을 호소하였으며, 로지스틱 회귀분석을 통하여 혼란변수를 보정한 결과 고정 보철 필요 위험비는 1.22, 부분의치 필요 위험비는 2.47, 총의치 필요 위험비는 2.06이었다. 치과보철 필요는 저작 불편 호소와 관련이 있었다. 따라서 노인을 위한 치과 보철 정책과 구강건강증진의 뒷받침이 가장 필요하다.

• 디지털융복합연구
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• 제11권12호
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• pp.569-576
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• 2013

본 연구는 우리나라 여성을 대상으로 경구피임약 복용과 치주질환의 관련성을 분석하여 피임약이 치주질환에 미치는 영향을 파악하고자 하였다. 연구자료는 제4기 국민건강영양조사 자료 중 2008년과 2009년 결과를 이용하였고, 19-50세 폐경 전 가임여성 1,101명을 대상자로 선정하였다. 인구사회경제적 요인과 구강보건행태, 피임약 복용기간 및 치주질환 상태를 파악하여 chi-square 검정과 logistic regression 분석을 통해 경구피임약 복용과 치주질환과의 관련성을 조사하였다. 그 결과, 인구사회경제적 요인 중 연령과 결혼여부, 흡연상태가 경구피임약 복용과 통계적인 유의성을 나타내었다. 현재 경구피임약 복용여부와 치은조직 상태는 연관성이 없는 것으로 확인되었다. 치주질환 유병율은 연령에 따라 증가하였지만, 피임약 복용기간과 흡연, 칫솔질과 치간관리를 포함한 구강보건형태와는 통계적으로 유의한 차이를 보이지 않았다. 마지막으로 logistic regression 분석 결과, 혼란변수 보정여부에 따라 큰 차이 없이 치주질환은 경구피임약 복용여부 및 복용기간과 관련성이 없는 것으로 확인되었다.

• Journal of Preventive Medicine and Public Health
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• 제34권3호
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• pp.237-243
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• 2001

Objectives : To examine the screening rate of cervical cancer in women and to find out the predictive factors for participation in cervical cancer screening programs within their life-time and within the last two years. Methods : The data was based on self-reported questionnaires from 1,613 women whose ages ranged from 26 to 60 years; this survey was peformed between December 1999 and January 2000. This study analyzed the predictive factors for participation in cervical cancer screening programs within their life-time and within the last two years. A logistic regression analysis was performed in order to derive the significant variables from the predisposing factors(demographic factor, health promotion behavior, reproductive factor), intervention factors(information channel, relation with medical stan, and proximal factors(attitude, social influence, self-efficacy). All analyses were peformed by the PC-SAS 6.12. Results : Our analyses showed that the screening rate for the women who received a cervical cancer screening(Pap smear) more than once within their life-time was 56.1% while those who had received one within the last two years was 34.5%. The significant factors for participation in cervical cancer screening program within their life-time were their income, married age, health promotion score, relation with medical staffs, social influence, and self-efficacy. On the other hand, age, number of pregnancies, menarche age, relation with medical staffs, social influences, and self-efficacy were significant factors for those being screened within the last two years. The predictive power of the logit model within their life-time was 68.8% and that within the last two years was 66.6%. Conclusion : The predictive factors for participation in cervical cancer screening program within their life-time are different from those for within the last two years. and that women's relations with medical staffs and social influences were the critical factors impacting on cervical cancer screening rates.

• 보건행정학회지
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• 제5권2호
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• pp.104-126
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• 1995

This study was carried out to assess the utilization of urban health center and its related factors among the urban residents. The survey was carried out for 2,394 households in Taegu and Kyongju by the structured questionnaire from 28 March to 4 April and from 2 July to 9 July, 1994. Well trained interviewers visited 2,630 households in Taegu and Kyongju, and interviewed with housewives. Of the target households, 91.0%(2,394 households) were responded through three-time visiting. The major results were summarized as follows : The fourth and fifth decad utilized the health center more frequently than any other age groups.. The lower income group showed higher rate of health center utilization than those in higher income group in Taegu City. The mean length of residence among residents of Kyongju City is longer than those of Taegu City, and the longer length of residence, the higher rate of the health center utilization. Those who are living together with neonate and infant or elderly people showed higher rate of health center utilization than those who are living without neonate and infant or elderly people in both Taegu and Kyongju. The most common reason for visiting the health center was 'low cost'. The major reasons for not visiting the health center were 'not regular customer', 'poor health center facility', and 'low quality of care'. Vaccination, communicable disease control, outpatient care, public hygiene, maternal and child health program were well recognized as health center activities. In logistic regression for the utilization of health center, the significant independent variables were length of residence and recognize the site of health center in both Taegu and Kyongju. The improvement of quality of health service, physical environment of health center and public relations on health center's activities shoulod be considered for reactivation and reingorcement of health center functions.