• Title/Summary/Keyword: systematic bias

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Efficacy of Muscle Energy Technique for Temporomandibular Disorders: A Systematic Review and Meta-analysis (턱관절 장애에 대한 근에너지 기법의 효과: 체계적 문헌 고찰 및 메타분석)

  • HongRyoul Yoon;JungWon Byun;SoonJoong Kim
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.18 no.2
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    • pp.31-42
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    • 2023
  • Objectives This study aimed to conduct a systematic review evaluating the effectiveness of muscle energy technique(MET) in temporomandibular joint disorders (TMD). Methods Searches were conducted in 11 electronic databases until October 2023. Randomized controlled trials(RCT) comparing the effect of MET for TMD were included. All studies were evaluated using the Cochrane Risk of Bias tool. Results Nine documents that fulfilled all the criteria were obtained for analysis. All studies showed some concerns in high risk of bias, but showed a significant improvement in pain and maximum mouth opening compared to baseline of MET or control group. MET was not better than extracorporeal shock wave therapy or myofascial release in some outcomes. Conclusions MET seems to be an effective treatment for TMD in some regards, however, can be considered as an adjunct therapy which has weak evidence. Further studies are required due to the inconclusive data and poor homogeneity found in this review.

The Effect of Laser Therapy for Stroke Patients : A Systematic Review and Meta-analysis (뇌졸중 환자에 대한 레이저 치료의 효과: 체계적 문헌고찰 및 메타분석)

  • Da-young An;Seung-ho Sun
    • The Journal of Korean Medicine
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    • v.45 no.1
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    • pp.45-64
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    • 2024
  • Objectives: This study is purposed to investigate the effect and safety of laser therapy for stroke patients by systematic review and meta-analysis of the randomized controlled trials (RCTs). Methods: RCTs on the treatment of laser therapy for stroke patients were selected among the literature published from January 2000 to June 2022 in twelve domestic and foreign databases. The quality of the literature was evaluated using the Cochrane's Risk of Bias tool and RevMan 5.4 was used for the synthesis of results. Results: Total 2,598 patients with stroke were finally selected from 18 RCTs. Meta-analysis showed that laser therapy was effective in significantly improving activities of daily living (MBI), motor function (effective rate), upper motor function (FMA-UE), shoulder pain related factors (CGRP, ET-1, BK). Overall, the risk of bias was uncertain or low in the quality assessment of the literature. Conclusions: Although it is unclear that laser therapy is more effective than sham laser, laser therapy might be more effective in improving symptoms than conventional rehabilitation alone. Furthermore, no serious adverse events were founded in laser therapy studies. However, the quality of the selected literature was generally low. Therefore, further studies with high methodological quality on laser therapy for stroke patients would be required in the future.

Uncertainty in Regional Climate Change Impact Assessment using Bias-Correction Technique for Future Climate Scenarios (미래 기상 시나리오에 대한 편의 보정 방법에 따른 지역 기후변화 영향 평가의 불확실성)

  • Hwang, Syewoon;Her, Young Gu;Chang, Seungwoo
    • Journal of The Korean Society of Agricultural Engineers
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    • v.55 no.4
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    • pp.95-106
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    • 2013
  • It is now generally known that dynamical climate modeling outputs include systematic biases in reproducing the properties of atmospheric variables such as, preciptation and temerature. There is thus, general consensus among the researchers about the need of bias-correction process prior to using climate model results especially for hydrologic applications. Among the number of bias-correction methods, distribution (e.g., cumulative distribution fuction, CDF) mapping based approach has been evaluated as one of the skillful techniques. This study investigates the uncertainty of using various CDF mapping-based methods for bias-correciton in assessing regional climate change Impacts. Two different dynamicailly-downscaled Global Circulation Model results (CCSM and GFDL under ARES4 A2 scenario) using Regional Spectial Model for retrospective peiod (1969-2000) and future period (2039-2069) were collected over the west central Florida. Total 12 possible methods (i.e., 3 for developing distribution by each of 4 for estimating biases in future projections) were examined and the variations among the results using different methods were evaluated in various ways. The results for daily temperature showed that while mean and standard deviation of Tmax and Tmin has relatively small variation among the bias-correction methods, monthly maximum values showed as significant variation (~2'C) as the mean differences between the retrospective simulations and future projections. The accuracy of raw preciptiation predictions was much worse than temerature and bias-corrected results appreared to be more significantly influenced by the methodologies. Furthermore the uncertainty of bias-correction was found to be relevant to the performance of climate model (i.e., CCSM results which showed relatively worse accuracy showed larger variation among the bias-correction methods). Concludingly bias-correction methodology is an important sourse of uncertainty among other processes that may be required for cliamte change impact assessment. This study underscores the need to carefully select a bias-correction method and that the approach for any given analysis should depend on the research question being asked.

The Effectiveness of Moxibustion Treatment for Primary Dysmenorrhea: A Systematic Review and Meta-Analysis (원발성 월경곤란증의 뜸 치료에 대한 체계적 문헌고찰 및 메타분석)

  • Lee, Hye-In;Baek, Seon-Eun;Lee, Ho-Jung;Park, Kyoung-Sun;Lee, Jin-Moo;Yoo, Jeong-Eun
    • The Journal of Korean Obstetrics and Gynecology
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    • v.30 no.2
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    • pp.107-119
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    • 2017
  • Objectives: The purpose of this study is to investigate the effectiveness of moxibustion for primary dysmenorrhea (PD). Methods: We searched 10 electronic databases (CNKI, WANFANG, VIP, AMED, CiNii, Embase, PubMed, Cochrane, OASIS, Korea Traditional Knowledge Portal) to identify eligible studies published before November 2016. We included randomized controlled clinical trials (RCTs) using moxibustion for primary dysmenorrhea. The methodological quality of each RCT was assessed by the Cochrane risk of bias tool. Results: Ten RCT studies were eligible in our review. The overall risk of bias was evaluated as unclear. The meta-analysis of 4 trials indicated that favorable results for the use of moxibustion. Conclusions: This systematic review and meta-analysis of clinical trials suggests that moxibustion can achieve good efficacy for PD patients. However, because of studies included analysis was biased due to unclear risk of bias and unreliable study design, future high-quality RCT studies are needed to determine the association moxibustion with PD.

Manual Therapy for Wrist Pain: A Systematic Review and Meta-analysis (손목 통증의 수기 치료에 대한 체계적 문헌 고찰과 메타분석)

  • Lee, Ye-Ji;Jeon, Cheon-Hoo;Kim, Hyo-Bin;Jeon, Ju-Hyun;Kim, Eun-Seok;Kim, Jin-Youp;Choi, Kang-Min;Kim, Young-Il
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.15 no.1
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    • pp.75-87
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    • 2020
  • Objectives : This study aimed to evaluate the effectiveness of manual therapy for wrist pain. Methods : We searched electronic databases (PubMed, Embase, Cochrane, CAJ, KISS, RISS, NDSL, OASIS, and KMBASE) for randomized controlled trials for manual therapy as a treatment for wrist pain. Results : A total of 9 randomized controlled trials were selected and meta-analysis was conducted on 6 studies. Three studies with different design of the intervention/control group were excluded from the meta-analysis. A high risk of bias was observed for both performance bias and detection bias. Conclusions : Our systematic review verified the clinical effect of manual therapy on wrist pain. Based on the results of this study, it is expected that clinical studies on wrist diseases and high-level follow-up studies will be conducted.

Antimicrobial efficacy of QMix on Enterococcus faecalis infected root canals: a systematic review of in vitro studies

  • Lim, Benjamin Syek Hur;Parolia, Abhishek;Chia, Margaret Soo Yee;Jayaraman, Jayakumar;Nagendrababu, Venkateshbabu
    • Restorative Dentistry and Endodontics
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    • v.45 no.2
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    • pp.23.1-23.12
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    • 2020
  • Objectives: This study aimed to summarize the outcome of in vitro studies comparing the antibacterial effectiveness of QMix with other irrigants against Enterococcus faecalis. Materials and Methods: The research question was developed by using population, intervention, comparison, outcome, and study design framework. The literature search was performed using 3 electronic databases: PubMed, Scopus, and EBSCOhost until October 2019. The additional hand search was performed from the reference list of the eligible studies. The risk of bias of the studies was independently appraised using the revised Cochrane Risk of Bias tool (RoB 2.0). Results: Fourteen studies were included in this systematic review. The overall risk of bias for the selected studies was moderate. QMix was found to have a higher antimicrobial activity compared to 2% sodium hypochlorite (NaOCl), 17% ethylenediaminetetraacetic acid (EDTA), 2% chlorhexidine (CHX), mixture of tetracycline isonomer, an acid and a detergent (MTAD), 0.2% Cetrimide, SilverSol/H2O2, HYBENX, and grape seed extract (GSE). QMix had higher antibacterial efficacy compared to NaOCl, only when used for a longer time (10 minutes) and with higher volume (above 3 mL). Conclusions: QMix has higher antibacterial activity than 17% EDTA, 2% CHX, MTAD, 0.2% Cetrimide, SilverSol/H2O2, HYBENX, GSE and NaOCl with lower concentration. To improve the effectiveness, QMix is to use for a longer time and at a higher volume.

Chuna Manual Therapy For Simple Obesity: A Systematic Review and Meta-analysis (단순성 비만에 대한 추나요법의 효과: 체계적 문헌고찰과 메타분석)

  • Lee, Yun-Jin;Lee, Eun-Byeol;Kim, Hyeon-Ji;An, Hee-Duk;Yang, Doo-Hwa
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.16 no.1
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    • pp.43-52
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    • 2021
  • Objectives The purpose of this study was to investigate the effectiveness of Chuna manual therapy (CMT) in the treatment of simple obesity. Methods We used seven databases to perform a literature search using the keywords "Chuna OR Tuina" AND "Obesity." We selected randomized clinical trials in which Chuna was used as the main method for treating simple obesity. The risk of bias was assessed by three independent researchers using the Cochrane risk of bias. Results A total of 14 RCTs were selected and analyzed. The results of the meta-analysis showed a significantly higher efficacy rate in the patient group treated with CMT as the main treatment than that in the control group. Conclusions The results of this systematic review suggest that CMT is effective in the treatment of simple obesity. However, given the limitations such as the small number of studies and the high risk of bias in the studies, additional research is needed to lend further support to this claim.

East Asian Traditional Medicine Treatment for Patients after Heart Valve Replacements: A Systematic Review with Meta-Analysis (심장판막 치환술 후 한의학적 치료에 대한 체계적 문헌고찰 및 메타분석)

  • Ahn, Mu-hyeok;Kim, Ji-ho;Shin, Bong-jin;Kwon, Jung-nam
    • The Journal of Internal Korean Medicine
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    • v.43 no.4
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    • pp.720-737
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    • 2022
  • Objectives: To compare the effectiveness and safety of East Asian traditional medicine treatments (EATMT) versus conventional management in patients following heart valve replacement surgery. Methods: We searched several databases, including the Korean Studies Information Service System, PubMed, China National Knowledge Infrastructure, and Citation Information by NII. The search range included randomized controlled trials from each first issue until June 27, 2021. Two review authors independently extracted the data. We assessed the risk of systematic errors by evaluating risk domains using the "Risk of bias" tool. Results: We included 5 trials in the review. In the EATMT, the investigators reported significant improvements in reshaping of the heart structure: left ventricular end diastolic diameter (MD -4.43, 95% CI -6.06 to -2.79; 130 participants; 2 studies; high evidence). Comparisons with usual care revealed a significant decrease in gastrointestinal complications rate (OR 0.30, 95% CI 0.20 to 0.47; 503 participants; 2 studies; high evidence). We assessed 4 studies as having a low risk of bias and 1 study as having a high risk of bias. Conclusion: This systematic review suggests that East Asian traditional medicine interventions may be effective in preventing and alleviating complications, but we found evidence of important trade-offs between known benefits and known adverse effects in cardiac dysfunction and inflammation following heart valve replacement. Consequently, additional high-quality studies should be conducted.

The Effectiveness of Moxibustion Treatment in Infertility with IVF-ET: A Systematic Review and Meta-Analysis (보조생식술을 시행한 난임환자에서의 뜸 치료에 대한 체계적 문헌고찰 및 메타분석)

  • Lee, Ho-Sung;Park, Yong-Duk;Lee, Hye-Jung;Hwang, Deok-Sang;Jang, Jun-Bock;Lee, Chang-Hoon;Lee, Jin-Moo;Kim, Dong-Il
    • The Journal of Korean Obstetrics and Gynecology
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    • v.35 no.2
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    • pp.28-41
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    • 2022
  • Objectives: The purpose of this study is to investigate the effectiveness of moxibustion in infertility with In Vitro Fertilization and Embryo Transfer (IVF-ET). Methods: We searched 8 databases (Embase, PubMed, CiNii, CNKI, OASIS, ScienceOn, KMBASE, KISS)to identify eligible studies published before 2021 Oct. We included randomized controlled clinical trials (RCTs) using moxibustion in infertility with IVF-ET. The methodological quality of each RCT was assessed by the Cochrane risk of bias tool. Results: Two RCT studies were eligible in our review. The overall risk of bias was evaluated as unclear. The meta-analysis of 2 trials indicated that favorable results for the use of moxibustion with IVF-ET. Conclusions: This systematic review and meta-analysis of clinical trials suggests that moxibustion with IVF-ET can effect on Infertility patients. However, because of studies included analysis was biased due to unclear risk of bias and unreliable study design, future RCT studies and additional Meta-Analysis are needed to judge the supplementary treatment role of moxibustion in infertility with IVF-ET.

The Effect of Task-Oriented Treadmill Training on Gait Function in Patients with Stroke: A Systematic Review and Meta-Analysis (과제 지향적 트레드밀 훈련이 뇌졸중 환자의 보행 능력에 미치는 영향: 체계적 고찰 및 메타분석)

  • Yong-Gu Han;Myoung-Kwon Kim
    • Journal of the Korean Society of Physical Medicine
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    • v.19 no.1
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    • pp.131-142
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    • 2024
  • PURPOSE: This study was a systematic review and meta-analysis of the literature comparing the differences between task-oriented treadmill training and general treadmill training for stroke patients. METHODS: Literature published in the Cumulated Index to Nursing and Allied Health Literature (CINAHL), Embase, Physiotherapy Evidence Database (PEDro), and PubMed was reviewed. A total of 1,163 studies were initially retrieved, of which eight articles were included in the final review. A quality assessment of the included studies was conducted using the Risk of Bias (RoB) 2.0 tool, and Duval and Tweedie's trim and fill method was used to evaluate publication bias. Data analysis was performed using R studio 4.2.1. RESULTS: According to the quality assessment using RoB 2.0, three articles were evaluated as low risk, two as of some concern, and three as high risk. The overall effect size of task-oriented tradmill training was .35. Regarding gait function, the values were .76, .25, and .40, respectively, for gait endurance, gait speed, and gait pattern. According to Duval and Tweedie's trim and fill method, no publication bias was observed. CONCLUSION: Study findings indicate that task-oriented treadmill training is the most effective intervention for improving gait endurance in patients with stroke. Therefore, applying this intervention to patients with stroke in the community is recommended.