• Title/Summary/Keyword: Cumulative effects

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Comparative Effect of Interventions for Fall Prevention in Hospitals: Network Meta-analysis (병원 입원 환자를 위한 낙상예방중재 효과의 비교우위: 네트워크 메타분석)

  • Kang, Hyunwook;Ko, Ji Woon
    • Journal of muscle and joint health
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    • v.30 no.3
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    • pp.218-229
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    • 2023
  • Purpose: This study aimed to assess and compare the effectiveness of various fall prevention interventions in hospitals through a network meta-analysis. Methods: A network meta-analysis was conducted using the "netmeta" package in R software (v4.1), employing a frequency method. Odds ratios of fall rates and injurious fall rates were utilized to confirm the effects of interventions for fall prevention. Comparative rankings of these interventions were determined using cumulative probability (P-score). Results: Comparative rankings via cumulative probability (P-scores) revealed individualized education as the most effective intervention for fall incidence (P-Score 87.8%). Followed by fall-preventing sensors (60.9%), multicomponent interventions (47.4%), usual care (33.2%), and environmental modification (20.7%). For fall-related injuries, individualized education ranked highest (P-Score 97.1%), followed by multicomponent interventions (76.0%), usual care (47.6%), environmental modification (24.2%), and fall-preventing sensors (5.1%). Conclusion: This study provides valuable insights into the relative effectiveness of diverse interventions in preventing fall incidence through network meta-analysis. The findings aim to support nurses in making informed decisions when implementing fall prevention strategies in clinical practice.

SSC risk significance in risk-informed, performance-based licensing of non-LWRs

  • James C. Lin
    • Nuclear Engineering and Technology
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    • v.56 no.3
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    • pp.819-823
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    • 2024
  • The main criteria used in NEI 18-04 to define SSCs as risk-significant include (1) the SSC is required to keep all LBEs within the F-C target, and (2) the total frequency with the SSC failed exceeds 1% of the limit for at least one of the three cumulative risk metrics used for evaluating the integrated plant risk. The first one is a reasonable criterion in determining the risk significant SSCs. However, the second criterion may not be adequate to serve the purpose of determining the risk significance of SSCs. In the second criterion, the cumulative risk metric values representing the integrated plant risk (less the preventive and mitigative effects of the SSC being evaluated) are compared to a risk limit that represents a very small contribution to the overall integrated plant risk, which corresponds appropriately to the contributions from individual SSCs. The easiest approach to redefine the NEI 18-04 definition of risk-significant SSCs in relation to the integrated plant risk metrics is to compare the difference, between the risk metric value calculated with the SSC failed and the risk metric value calculated with the SSC credited, with 1% of the risk limit established for the integrated plant risk metrics.

Comparative Study of Postoperative Pain in Lower and Upper Abdominal Surgery Using Patient-Controlled Analgesia (통증 자가 조절법을 이용한 상복부와 하복부 수술 후 통증의 비교)

  • Ko, Seong-Hoon;Kim, Dong-Chan;Lee, Jun-Rye;Han, Young-Jin;Choe, Huhn
    • The Korean Journal of Pain
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    • v.13 no.2
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    • pp.208-212
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    • 2000
  • Background: We studied 250 patients who received intravenous patient-controlled analgesia (PCA) after lower and upper abdominal surgery to evaluate pain relief, analgesic consumption, patient's mood and side effects. Methods: We made total 60 ml of analgesic mixture with morphine 60 mg, ketorolac 180 mg, droperidol 5 mg and normal saline. Loading and bolus dose and lockout interval were 0.05 ml/kg, 1.0 ml and 7 min, respectively. The duration of operation and the length of skin incision were recorded. Visual analog scale (VAS) pain and mood scores, cumulative analgesic consumption, and incidence of side effect were evaluated. Results: In the upper abdominal surgery group (Group 2), the duration of operation and length of skin incision were longer than Group 1. The average postoperative pain scores at 6, 24, and 48 hours in lower (Group 1) vs upper (Group 2) abdominal surgery were $4.3{\pm}2.1$ vs $4.7{\pm}2.4$, $3.3{\pm}1.9$ vs $4.3{\pm}2.8$, and $2.4{\pm}2.7$ vs $3.2{\pm}2.1$, respectively. There were no significant differences in the cumulative analgesic consumption and number of analgesic demands and at 6, 24, 48 hours after the operation between two groups. Group 2 patients required significantly longer pain control using PCA as compared to Group 1 patients. There were no significant differences in the incidence of side effects between the two groups. Conclusions: There was little difference in postoperative pain after lower and upper abdominal surgery.

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The Effect of Bilateral Femoral Nerve Block Combined with Intravenous Patient-controlled Analgesia after a Bilateral Total Knee Replacement (양측 슬관절 전치환술 후 정맥 내 통증자가조절 시 대퇴신경차단의 병용이 미치는 영향)

  • Chung, Mee Young;Kim, Chang Jae
    • The Korean Journal of Pain
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    • v.21 no.3
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    • pp.211-216
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    • 2008
  • Background: Postoperative pain after bilateral total knee replacement (TKR) is expected to be more severe than unilateral TKR. Intravenous patient-controlled analgesia (IV PCA) is less effective than other methods of pain management especially immediately after an operation even though it is an easily controlled method for managing pain. This study was designed to evaluate the effect of femoral nerve blocks combined with IV PCA after bilateral TKR for postoperative pain control. Methods: The patients in group I (n = 20) were given only IV PCA with morphine and group II (n = 20) were given bilateral femoral nerve blocks with 12 ml of 0.25% bupivacaine and epinephrine 1 : 400,000 before extubation followed by an IV PCA. Main outcome measures included numerical rating pain score, cumulative opioid consumption, hourly dose during each time interval, and side effects. Results: The pain score in group II was significantly lower than that in group I immediately after recovery of awareness and at 3, 6, 12 hours postoperatively. Cumulative opioid consumption was significantly decreased in group II during the first 48 hours postoperatively. The hourly dose in group II was also significantly lower than that in group I until 12 hours postoperatively. There was no difference in side effects between the groups. Conclusions: We concluded that bilateral femoral nerve blocks improve analgesia and decrease morphine use during IV PCA after bilateral TKR.

Effect of Preoperative Analgesia with Epidural Morphine in Upper Abdominal Surgery (상복부 수술 환자에서 경막외 Morphine의 술전 투여와 술중 투여시 진통 효과 비교)

  • Kim, Yun-Hee;Yoo, Rae-Ho;Ko, Seong-Hoon;Han, Young-Jin;Choe, Huhn
    • The Korean Journal of Pain
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    • v.11 no.1
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    • pp.41-46
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    • 1998
  • Background: Preoperative analgesia may prevent nociceptive inputs generated during surgery from sensitizing central neurons and therefore may preempt postoperative pain. Although preemptive analgesia has shown to decrease postinjury pain in animals, studies in human are not consistent. We studied whether epidural morphine injection before surgical incision could affect postoperative pain and analgesic demands, compared with injection after removal of specimen. Methods: Forty patients scheduled for radical subtotal gastrectomy were randomly assigned to one of two groups for prospective study in a double-blind manner. Group 1 received an epidural injection of 3 mg of morphine in 8 ml of 0.9% saline before surgical incision, and Group 2 after removal of specimen. Postoperative pain relief was provided with I.V. patient controlled analgesia (PCA) system. Numerical rating scales for pain and mood, Prince Henry Hospital scores for pain, cumulative PCA analgesic consumptions, and incidence of side effects were assessed at 2, 6, 12, 24, 48 hours after operation. Results: Cumulative PCA analgesic consumption in group 1 was significantly less than in group 2 at 2, 6 hours after surgery. Pain scores and the incidence of side effects were similar in both groups. Conclusions: Preoperative analgesia with epidural morphine showed little difference in patient controlled analgesic consumption after upper abdominal surgery compaired to intraoperative morphine.

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Simultaneous Comparison of Efficacy and Adverse Events of Interventions for Patients with Esophageal Cancer: Protocol for a Systematic Review and Bayesian Network Meta-analysis

  • Doosti-Irani, Amin;Mansournia, Mohammad Ali;Rahimi-Foroushani, Abbas;Cheraghi, Zahra;Holakouie-Naieni, Kourosh
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.2
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    • pp.867-872
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    • 2016
  • Background: Esophageal cancer is one of the most serious malignancies. Due to the aggressive nature of this cancer, the prognosis is poor. A network meta-analysis with simultaneous comparison of multiple treatments can help determine better treatment options that have higher effects on overall survival of patients with lower adverse events. The aim of this review is to simultaneously compare efficacy and adverse events of treatment interventions for esophageal cancer. Materials and Methods: In this review, only randomized control trials (RCT) will be considered for network meta-analysis. All international electronic databases including Medline, Web of Sciences, Scopus, Cochran's library, EMBASE and Cancerlit will be searched to find randomized control trials which compared two or more treatment interventions for esophageal cancer. A network plot will be drawn for visual representation of all available treatment interventions. Bayesian approach will be used to combine the direct and indirect evidence. Treatment effects (e.g. hazard ratio for time to event outcomes, risk ratio for binary outcomes, and rate ratio for count outcomes with 95% credible interval) will be reported. Moreover, cumulative probability of the treatment ranks will be reported using the surface under the cumulative ranking (SUCRA) graphs. Consistency assumption will be assessed by the loop-specific and design-by-treatment interaction approaches. Conclusions: The results of this study may be helpful for the patients, clinicians and health policy makers in selecting treatments that have the best effect on survival and lowest adverse events.

Preventive Effect of Serotonergic Drugs on LPS-Induced Acute Anorexia in Rats

  • Park, So-Young;Kim, Keon-Ho;Ahn, Dong-Kuk;Park, Tae-Im;Kim, Jong-Yeon;Kim, Yong-Woon;Lee, Dong-Chul;Lee, Suck-Kang
    • The Korean Journal of Physiology and Pharmacology
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    • v.9 no.3
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    • pp.149-153
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    • 2005
  • The aim of the present study was to determine whether serotonergic drugs could reverse lipopolysaccharide (LPS)-induced anorexia in rats. LPS ($500{\mu}g$/kg body weight) and all serotonergic drugs, except for 8-OH-DPAT (subcutaneous), were injected intraperitoneally into Sprague-Dawley rats. Without the LPS injection, 8-OH-DPAT (1A agonist), metergoline (1/2 antagonist), and mianserin (2A/2C antagonist) exerted no effects on food intake at any of the doses tested, but ketanserin (2A antagonist) caused an increase of food intake at 4 mg/kg. RS-102221 (2C antagonist) reduced food intake at 2 and 4 mg/kg. LPS reduced food intake 1 hour after injection, and food intake remained low until the end of measurement period (24 hours) (p<0.05). Pretreatment of rats with 8-OH-DPAT partially recovered of cumulative food intake at all measured times (2, 4, 6, 8, and 24 hours after LPS injection). Pretreatment with metergoline resulted in a partial recovery of cumulative food intake at 2, 4, 6, and 8 hours, but not at 24 hours. Ketanserin caused partial recovery at 2 and 4 hours only. Mianserin and RS-102221 had no effects on LPS-reduced food intake. A variety of serotonergic drugs ameliorated anorexic symptoms, which suggesting that the serotonin system plays a role in LPS-induced anorexia.

The Long Term Effectiveness of Kindergarten Education (유치원(幼稚園) 교육(敎育)의 효과(效果)와 지속성(持續性)에 관한 연구(硏究))

  • Kwon, Young Re
    • Korean Journal of Child Studies
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    • v.3
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    • pp.97-113
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    • 1982
  • Problems This study was aimed to find out the effects of Kindergarten education on primary school child's learning achievement and it's continuance. The specific question to be investigated in this study can he summarized as follows. 1. How did the kindergarten education effect upon primary school child's learning achievement and behavioral development? 2. How did the differences of learning achievement and behavioral development between groups of children attending kindergarten and not attending kindergarten? Methods 1. Subjects One hundred and twenty children of sixth grade and one hundred primary school's teachers were employed 1) Sixty of children were experimented groups who had received kindergarten education. Sixty of Children are Control group who had not received Kindergarten education. The subjects were sampled in N primary school in seoul and Y primary school in Taejeon. Sixty of children were boys and sixty of children were girls. 2) Fifty of teachers were sampled in N primary school in Seoul and Fifty of teachers were sampled in Y primary school in Taejeon. 2. Instrument 1) School cumulative record. School cumulative record was referred to find out the differences of school records on learning achievement in morality, National language, social studies, arithmatics, natural science, gymnastics, music, fine arts and behavioral development in industry, responsibility, coorperation, indeperdence, law abiding spirit between experimental group and control group. 2) Questionnaire paper which constructed 10 articles. Questionnaire paper asked to primary school teachers for effects of kindergarten education. Results The results of date analysis can summarized as follows. 1. Kindergarten education, generally, is regarded effective at least for school work achievement but not so effective for morality and physical education. 2. Kindergarten education is not so effective in all school works of primary school in its continuance since its effectiveness begins to fade away from the 4th grade of primary school. But such continuance tends to be outstanding especially in national language, social subjects and arts. 3. The experiences of kindergarten education is not much helpful to behavioral development during primary school. 4. Primary school teachers recognize that kindergarten education contributes to curriculum work and behavioral development for primary school children.

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Glucose Effects on Cell Growth, Antibody Production, and Cell Metabolism of Hybridoma Cells (Hybridoma 세포의 세포성장, 항체생산 및 세포대사에 미치는 Glucose의 영향)

  • ;Shaw S.Wang
    • KSBB Journal
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    • v.10 no.3
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    • pp.323-334
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    • 1995
  • The effects of glucose on cell growth kinetics, monoclonal antibody productivity, and cell metabolism or hybridoma cells were investigated. The mouse-mouse hybridoma cell line VIII H-8 producing mouse IgG2a was used as a modal system. Glucose showed substrate inhibition type dependence on specific growth raie. The maximum cell density increased as initial glucose concentration increased up to 4 g/$\ell$. Glucose showed a strong influence on cell death kinetics, and an inverse relationship between specific death rate and glucose concentration was found. Cell viability and monoclonal antibody production increased as initial glucose concentration increased. The specific glucose consumption rate increased with glucose concentration, and cumulative specific lactate production rate increased with increasing initial glucose concentration. The overall kinetics of ammonium ion production was almost invariant with respect to initial glucose concentration, while the cumulative specific ammonium ion production rate was dependent on initial glucose concentration.

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Meta-Analysis on the Effects of Action Observation Training on Stroke Patients' Walking; Focused on Domestic Research (뇌졸중 환자의 동작관찰훈련이 보행에 미치는 효과에 대한 메타분석; 국내연구를 중심으로)

  • Lee, Jeongwoo;Ko, Un;Doo, Yeongtaek
    • Journal of The Korean Society of Integrative Medicine
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    • v.7 no.4
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    • pp.119-130
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    • 2019
  • Purpose : The purpose of this study was to investigate the meta-analysis on the effects of action observation training on stroke patients' walking. Methods : Domestic databases (DBpia, KISS, NDSL, and RISS) were searched for studies that conducted randomized controlled trials (RCTs) associated with action observation training in adults after stroke. The search outcomes were items associated with the walking function. The 18 studies that were included in the study were analyzed using R meta-analysis. A random-effect model was used for the analysis of the effect size because of the significant heterogeneity among the studies. Sub-group and meta-regression analysis were also used. Egger's regression test was conducted to analyze the publishing bias. Cumulative meta-analysis and sensitivity analysis were also done to analyze a data error. Results : The mean effect size was 2.77. The sub-group analysis showed a statistical difference in the number of training sessions per week. No statistically significant difference was found in the meta-regression analysis. Publishing bias was found in the data, but the results of the trim-and-fill method showed that such bias did not affect the obtained data. Also, the cumulative meta-analysis and sensitivity analysis showed no data errors. Conclusion : The meta-analysis of the studies that conducted randomized clinical trials revealed that action observation training effectively improved walking of the chronic stroke patients.