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Article | 08-December-2021

Unreported standard errors in meta-analysis

A study that would otherwise be eligible is commonly excluded from a meta-analysis when the standard error of its treatment-effect estimator, or the estimate of the variance of the outcomes, is not reported and cannot be recovered from the available information. This is wasteful when the estimate of the treatment effect is reported. We assess the loss of informa tion caused by this practice and explore methods of imputation for the missing variance. The methods are illustrated on two sets of

Nicholas T. Longford

Statistics in Transition New Series, Volume 22 , ISSUE 4, 1–17

Review | 30-November-2020

Effects of cerebral hypoperfusion on the cerebral white matter: a meta-analysis

flow. Therefore, an experimental cerebral hypoperfused animal model is needed for understanding the association between CBF and WM alterations. In this systematic review, we aim to evaluate the association between cerebral hypoperfusion and WM changes in rodents by we meta-analyzed on published studies on the measurements of CBF and the total volume of WM in cerebral hypoperfusion model mice and aging mice. Systematic review, data collection and analysis This meta-analysis was conducted according

Juyeon Mun, Junyang Jung, Chan Park

Acta Neurobiologiae Experimentalis, Volume 81 , ISSUE 3, 295–306

research-article | 30-November-2020

Prevalence of Dirofilaria immitis in mosquitoes (Diptera) – systematic review and meta-analysis

dissection method which is the gold standard (Latrofa et al., 2012). The experimental studies allow the evaluation of vector competence of suspected mosquitoes for transmission of dirofilariasis (Nayar and Knight, 1999). The results of such experimental studies have been recorded, but no comprehensive evaluation of vector efficiency has been done in all mosquitoes to date. The current systematic review and meta-analysis were conducted on published studies, documenting the prevalence of D. immitis

Seyed Mohammad Riahi, Mustapha Ahmed Yusuf, Shahyad Azari-Hamidian, Rahmat Solgi

Journal of Nematology, Volume 53 , 1–13

Article | 20-July-2021

Clinical evidence in the treatment of white spot lesions following fixed orthodontic therapy: a meta-analysis

included that involved (i) patients of any age who had WSLs after the removal of fixed appliances, (ii) any treatment to remineralise the WSLs compared with no treatment or a placebo, and (iii) measurement of the changes in enamel mineralisation status after treatment. Eligible articles were assessed for internal bias and underwent narrative synthesis. A meta-analysis using random-effects modelling was performed to calculate a pooled estimate and assess between-study variability using Cochran’s Q

Eng Seng Yeoh, Tam Le, Joemer Maravilla, Vincent O’Rourke, Yan He, Qingsong Ye

Australasian Orthodontic Journal, Volume 34 , ISSUE 1, 45–60

research-article | 26-April-2019

Agricultural intensification and urbanization negatively impact soil nematode richness and abundance: a meta-analysis

diverse results creates the need to synthesize quantitative summaries in order to draw general conclusions across studies and test key hypotheses regarding patterns and processes governing soil biodiversity. Meta-analysis is a tractable and powerful statistical tool developed to generate a quantitative summary of all the published literature and draw conclusions across multiple studies (Arnqvist and Wooster, 1995). Therefore, meta-analysis was chosen to address this issue. The specific objective of

Satyendra K. Pothula, Parwinder S. Grewal, Robert M. Auge, Arnold M. Saxton, Ernest C. Bernard

Journal of Nematology, Volume 51 , 1–17

Article | 20-July-2021

Effectiveness of different psychological interventions in reducing fixed orthodontic pain: A systematic review and meta-analysis

Background/Objective: Pain induced by tooth movement is a common experience for orthodontic patients. The effectiveness of psychological intervention, as a new approach to control pain, has not been fully explored. Hence, this systematic review and meta-analysis is intended to evaluate the analgesic effect of psychological intervention within the week after fixed orthodontic initial arch wire placement. Methods: A computerised literature search was conducted in the Medline (1966-2019), Embase

Chong Feng, Chenzhou Wu, Zhaowei Jiang, Linkun Zhang, Xizhong Zhang

Australasian Orthodontic Journal, Volume 35 , ISSUE 2, 195–209

research-article | 13-July-2021

Dental developmental stage affects the treatment outcome of maxillary protraction in skeletal Class III children: A systematic review and meta-analysis

measurement and bias due to the selection of the reported result. The overall risk of bias of each study was assessed as low, moderate, serious, critical risk of bias or no information. In the present review, studies assessed at low risk of bias were defined as ‘high quality’, whereas others were considered as ‘low quality’.15,16 Statistical analysis Review Manager version 5.3 (The Cochrane Collaboration, 2012) was used for the meta-analysis.17,18 Mean differences (MD) and standard mean differences (SMD

Wei Miao, Dan Zhou, Chunjie Li, Lichun Chen, Min Guan, Yiran Peng, Li Mei

Australasian Orthodontic Journal, Volume 37 , ISSUE 1, 37–49

Review | 10-July-2018

Hallucinations and other psychotic symptoms in response to methylphenidate in children and adolescents with attention-deficit/hyperactivity disorder: a Cochrane systematic review with meta-analysis and trial sequential analysis#

difference in the risk of developing psychotic symptoms [10 of 654 (pooled prevalence, 2.5%) methylphenidate versus 1 of 508 (pooled prevalence, 1.7%) placebo patients; risk ratio, 2.07; 95% confidence interval, 0.58 to 7.35]. Nine of 10 trials had a high risk of bias, and according to the Trial Sequential Analysis, the required information size was not achieved, that is, the meta-analysis was considerably underpowered. There were 873 instances of psychotic symptoms in the non-randomized studies among

Erica Ramstad, Ole Jakob Storebø, Trine Gerner, Helle B. Krogh, Mathilde Holmskov, Frederik L. Magnusson, Carlos R. Moreira-Maia, Maria Skoog, Camilla Groth, Donna Gillies, Morris Zwi, Richard Kirubakaran, Christian Gluud, Erik Simonsen

Scandinavian Journal of Child and Adolescent Psychiatry and Psychology, Volume 6 , ISSUE 1, 52–71

research-article | 30-November-2020

Reliability of knee joint sonography in the evaluation of gouty arthritis

9 articles were removed due to duplication. Further screening was performed for 105 articles, and 27 articles were excluded due to insufficient information. Seventy-eight full-text articles were assessed for eligibility. A total of 13 full-text articles were excluded due to research performed on animals, as the study had been designed as a review of only human studies. Sixty-three studies were included that had a qualitative synthesis. In addition, 63 quantitative syntheses were included (meta

Zafar Iqbal Anjum, Raham Bacha, Iqra Manzoor, Syed Amir Gilani

Journal of Ultrasonography, Volume 21 , ISSUE 87, 300–305

research-article | 30-November-2020

Efficacy of fluoride varnish in treating orthodontically-induced white spot lesions: a systematic review and meta-analysis

facial or lingual surfaces of permanent teeth.14 As recently reported in the network meta-analysis, FV showed a 2- to 3-times greater chance of arresting or reversing lesions in primary and permanent teeth compared with no treatment.15 The use of FV as an effective caries preventive measure is now advocated by several international clinical guidelines.5,16–18 The FV has also been demonstrated to be proficient in reducing the incidence of caries in both deciduous and permanent dentitions.19 The

Abdulaziz Alrebdi, Dan Ericson, Syed Saad B. Qasim, Ahmad Albahoth, Abdulelah Al-Sulimani, Jagan Kumar Baskaradoss

Australasian Orthodontic Journal, Volume 37 , ISSUE 2, 147–156

research-article | 13-July-2021

Prevention of incipient carious lesions with various interventions during fixed and removable orthodontic treatment. A systematic review and meta-analysis

bias in the included RCTs.19 This tool evaluates bias across five domains: the randomisation process, deviations from intended interventions, missing outcome data, measurement of the outcome, and selection of the reported result. Summary measures and approach to data synthesis Statistical heterogeneity was assessed by the I2 statistic, with significance set at p < 0.05. These statistical analyses and meta-analysis were performed using Jamovi (an open statistical software) with a random-effects

Justin Mathews, Paul M. Schneider, Anita Horvath, David J. Manton, Mihiri Silva

Australasian Orthodontic Journal, Volume 37 , ISSUE 1, 14–30

Review | 31-January-2019

The use of ultrasound-guided platelet-rich plasma injections in the treatment of hip osteoarthritis: a systematic review of the literature

and Allied Health and Allied and Complimentary Medicine databases. The Preferred Reporting Items for Systematic Review and Meta-Analysis methodology guidance was employed and a quality assessment was performed using the Jadad score. Results: Three randomised clinical trials met the inclusion criteria and were included for analysis. All three trials were of good quality based on the Jadad score. A total of 115 patients out of 254 received platelet-rich plasma injections under ultrasound guidance

Mohammed Ali, Ahmed Mohamed, Hussam Elamin Ahmed, Ajay Malviya, Ismael Atchia

Journal of Ultrasonography, Volume 18 , ISSUE 75, 332–337

Review | 31-January-2019

The role of ultrasonography in the diagnosis of occult scaphoid fractures

Abstract Background: Ultrasonography is widely utilized by emergency physicians and radiologists to diagnose various orthopaedic diseases, including fractures. We aim to derive a definitive estimate of the diagnostic accuracy of ultrasonography in clinically suspected scaphoid fractures. Methods: We undertook a systematic review and meta-analysis of included diagnostic cohort studies that discussed the use of ultrasonography in the diagnosis of occult scaphoid fractures. We searched the

Mohammed Ali, Mujtaba Ali, Ahmed Mohamed, Syed Mannan, Farshid Fallahi

Journal of Ultrasonography, Volume 18 , ISSUE 75, 325–331

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