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Faust-Socher A, Anis S, Kestenbaum M, Shabtai H, Taichman T, Bar David A, Ezra A, Peretz C, Rosenberg A, Brozgol M, Herman T, Stebbins GT, Goetz CG, Martínez-Martín P, Luo ST, Ren X, Giladi N, Gurevich T. Validation of the Hebrew Version of the Unified Dyskinesia Rating Scale. Neuroepidemiology 2020; 54:356-362. [PMID: 32541146 DOI: 10.1159/000507827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 03/25/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The Unified Dyskinesia Rating Scale (UDysRS) is a well-established tool for producing comprehensive assessments of severity and disability associated with dyskinesia in patients with Parkinson's disease (PD). The scale was originally developed in English, and a broad international effort has been undertaken to develop and validate versions in additional languages. Our aim was to validate the Hebrew version of the UDysRS. METHODS We translated the UDysRS into Hebrew, back-translated it into English, and carried out cognitive pretesting. We then administered the scale to non-demented native Hebrew-speaking patients who fulfilled the Brain Bank diagnostic criteria for probable PD (n = 250). Data were compared to the Reference Standard data used for validating UDysRS translations. RESULTS The different portions of the Hebrew UDysRS showed high internal consistency (α ≥ 0.92). A confirmatory factor analysis in which we compared the Hebrew UDysRS to the Reference Standard version produced a comparative fit index (CFI) of 0.98, exceeding the threshold criterion of CFI > 0.9 indicating factor validity. A secondary exploratory factor analysis provided further support to the consistency between the factor structures of the Hebrew and Reference Standard versions of the UDysRS. CONCLUSION The UDysRS Hebrew version shows strong clinimetric properties and fulfills the criteria for designation as an official International Parkinson and Movement Disorder Society-approved translation for use in clinical and research settings.
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Affiliation(s)
- Achinoam Faust-Socher
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel, .,Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel,
| | - Saar Anis
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Meir Kestenbaum
- Neurological Department, Meir Medical Center, Tel Aviv University, Tel-Aviv, Israel
| | - Herzl Shabtai
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Tali Taichman
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Aya Bar David
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Adi Ezra
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Chava Peretz
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Alina Rosenberg
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Marina Brozgol
- The Center for the Study of Movement, Cognition, and Mobility (CMCM), Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Talia Herman
- The Center for the Study of Movement, Cognition, and Mobility (CMCM), Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Glenn T Stebbins
- Department of Neurological Services, Rush University Medical Center, Chicago, Illinois, USA
| | - Christopher G Goetz
- Department of Neurological Services, Rush University Medical Center, Chicago, Illinois, USA
| | - Pablo Martínez-Martín
- Center for Networked Biomedical Research in Neurodegenerative Diseases (CIBERNED), Carlos III Institute of Health, Madrid, Spain
| | - Sheng T Luo
- Department of population health sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Xuehan Ren
- Gilead Sciences, Inc., Foster City, California, USA
| | - Nir Giladi
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel.,Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel.,Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Tanya Gurevich
- Movement Disorders Unit, Neurology Department, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel.,Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel.,Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
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Vidoni ML, Pettee Gabriel K, Luo ST, Simonsick EM, Day RS. Relationship between Homocysteine and Muscle Strength Decline: The Baltimore Longitudinal Study of Aging. J Gerontol A Biol Sci Med Sci 2019; 73:546-551. [PMID: 28958086 DOI: 10.1093/gerona/glx161] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 08/18/2017] [Indexed: 12/30/2022] Open
Abstract
Background Decreased muscle strength is strongly associated with future mobility limitations in older adults. Homocysteine is a risk factor for vascular disease and may exacerbate muscle strength decline. The present study aimed to examine the association between homocysteine levels and muscle strength in adults aged 50 years or older. Methods Data were from 1,101 participants of The Baltimore Longitudinal Study of Aging between December 2004 and March 2015. Muscle strength was measured using grip strength. Mixed effects linear regression was used to estimate the association between homocysteine and muscle strength in men and women, separately. Results Total mean follow-up time was 4.7 ± 3.1 years, range from 0 to 10.1 years. Baseline mean grip strength was 39.9 kg for men and 25.5 kg for women. Grip strength declined over the follow-up time for both men and women. Among women, there was a significant inverse relationship between homocysteine and grip strength, where grip strength declined as a function of increasing homocysteine over time (β = -0.05, p = .031). Among men, an increase of 1 μmol/L in homocysteine was associated with -0.10 kg decrease in grip strength, though not significantly. Conclusions In this study of healthy older adults aged 50 years or older, higher homocysteine was related to lower muscle strength in women. This is the first study to characterize the relationship over a long follow-up period. Future research should focus on assessing homocysteine as a marker of physical function decline and translating the relationship into clinical and public health practice.
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Affiliation(s)
- Michelle L Vidoni
- Division of Epidemiology, Human Genetics, and Environmental Science, The University of Texas Health Science Center at Houston School of Public Health
| | - Kelley Pettee Gabriel
- Division of Epidemiology, Human Genetics, and Environmental Science, The University of Texas Health Science Center at Houston School of Public Health in Austin
| | - Sheng T Luo
- Division of Biostatistics, The University of Texas Health Science Center at Houston School of Public Health
| | - Eleanor M Simonsick
- Division of Geriatric Medicine and Gerontology, Translational Gerontology Branch, Intramural Research Program, National Institute on Aging, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - R Sue Day
- Division of Epidemiology, Human Genetics, and Environmental Science, Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center at Houston School of Public Health
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Rafferty MR, Schmidt PN, Luo ST, Li K, Marras C, Davis TL, Guttman M, Cubillos F, Simuni T. Regular Exercise, Quality of Life, and Mobility in Parkinson's Disease: A Longitudinal Analysis of National Parkinson Foundation Quality Improvement Initiative Data. J Parkinsons Dis 2017; 7:193-202. [PMID: 27858719 DOI: 10.3233/jpd-160912] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Research-based exercise interventions improve health-related quality of life (HRQL) and mobility in people with Parkinson's disease (PD). OBJECTIVE To examine whether exercise habits were associated with changes in HRQL and mobility over two years. METHODS We identified a cohort of National Parkinson Foundation Quality Improvement Initiative (NPF-QII) participants with three visits. HRQL and mobility were measured with the Parkinson's Disease Questionnaire (PDQ-39) and Timed Up and Go (TUG). We compared self-reported regular exercisers (≥2.5 hours/week) with people who did not exercise 2.5 hours/week. Then we quantified changes in HRQL and mobility associated with 30-minute increases in exercise, across PD severity, using mixed effects regression models. RESULTS Participants with three observational study visits (n = 3408) were younger, with milder PD, than participants with fewer visits. After 2 years, consistent exercisers and people who started to exercise regularly after their baseline visit had smaller declines in HRQL and mobility than non-exercisers (p < 0.05). Non-exercisers worsened by 1.37 points on the PDQ-39 and a 0.47 seconds on the TUG per year. Increasing exercise by 30 minutes/week was associated with slower declines in HRQL (-0.16 points) and mobility (-0.04 sec). The benefit of exercise on HRQL was greater in advanced PD (-0.41 points) than mild PD (-0.14 points; p < 0.02). CONCLUSIONS Consistently exercising and starting regular exercise after baseline were associated with small but significant positive effects on HRQL and mobility changes over two years. The greater association of exercise with HRQL in advanced PD supports improving encouragement and facilitation of exercise in advanced PD.
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Affiliation(s)
- Miriam R Rafferty
- Center for Education in Health Sciences Northwestern University, Chicago, IL, USA
| | | | - Sheng T Luo
- Department of Biostatistics, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Kan Li
- Department of Biostatistics, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Connie Marras
- Morton and Gloria Shulman Movement Disorders Centre and the Edmond J Safra Program in Parkinson's disease, Toronto Western Hospital, University of Toronto, Toronto, Canada
| | - Thomas L Davis
- Thomas L. Davis, Division of Movement Disorders, Department of Neurology, Vanderbilt University, Nashville, TN, USA
| | - Mark Guttman
- Division of Neurology, Department of Medicine, University of Toronto, Toronto, Canada
| | | | - Tanya Simuni
- Department of Neurology, Northwestern University, Chicago, IL, USA
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Zitser J, Peretz C, Ber David A, Shabtai H, Ezra A, Kestenbaum M, Brozgol M, Rosenberg A, Herman T, Balash Y, Gadoth A, Thaler A, Stebbins GT, Goetz CG, Tilley BC, Luo ST, Liu Y, Giladi N, Gurevich T. Validation of the Hebrew version of the Movement Disorder Society-Unified Parkinson's Disease Rating Scale. Parkinsonism Relat Disord 2017; 45:7-12. [PMID: 28965872 DOI: 10.1016/j.parkreldis.2017.09.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/27/2017] [Accepted: 09/12/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND The Movement Disorders Society (MDS) published the English new Unified Parkinson's Disease Rating Scale (MDS-UPDRS) as the official benchmark scale for Parkinson's disease (PD) in 2008. We aimed to validate the Hebrew version of the MDS-UPDRS, explore its dimensionality and compare it to the original English one. METHODS The MDS-UPDRS questionnaire was translated to Hebrew and was tested on 389 patients with PD, treated at the Movement Disorders Unit at Tel-Aviv Medical Center. The MDS-UPDRS is made up of four sections. The higher the score, the worst the clinical situation of the patient is. Confirmatory and explanatory factor analysis were applied to determine if the factor structure of the English version could be confirmed in the Hebrew version. RESULTS The Hebrew version of the MDS-UPDRS showed satisfactory clinimetric properties. The internal consistency of the Hebrew-version was satisfactory, with Cronbach's alpha values 0.79, 0.90, 0.93, 0.80, for parts 1 to 4 respectively. In the confirmatory factor analysis, all four parts had high (greater than 0.90) comparative fit index (CFI) in comparison to the original English MDS-UPDRS with high factor structure (0.96, 0.99, 0.94, 1.00, respectively), thus confirming the pre-specified English factor structure. Explanatory factor analysis yielded that the Hebrew responses differed from the English one within an acceptable range: in isolated item differences in factor structure and in the findings of few items having cross loading on multiple factors. CONCLUSIONS The Hebrew version of the MDS-UPDRS meets the requirements to be designated as the Official Hebrew Version of the MDS-UPDRS.
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Affiliation(s)
- Jennifer Zitser
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel.
| | - Chava Peretz
- School of Public Health, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Aya Ber David
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Herzl Shabtai
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Adi Ezra
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Meir Kestenbaum
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Marina Brozgol
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Alina Rosenberg
- School of Public Health, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Talia Herman
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Yakov Balash
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Avi Gadoth
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel
| | - Avner Thaler
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Glenn T Stebbins
- Department of Neurological Services, Rush University Medical Center, Chicago, IL, USA
| | - Christopher G Goetz
- Department of Neurological Services, Rush University Medical Center, Chicago, IL, USA
| | - Barbara C Tilley
- Department of Biostatistics, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Sheng T Luo
- Department of Biostatistics, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Yuanyuan Liu
- Department of Biostatistics, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Nir Giladi
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
| | - Tanya Gurevich
- Movement Disorders Unit, Neurological Institute, Tel Aviv Medical Center, Tel-Aviv, Israel; Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel
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Vidoni ML, Pettee Gabriel K, Luo ST, Simonsick EM, Day RS. Vitamin B12 and Homocysteine Associations with Gait Speed in Older Adults: The Baltimore Longitudinal Study of Aging. J Nutr Health Aging 2017; 21:1321-1328. [PMID: 29188896 PMCID: PMC5726303 DOI: 10.1007/s12603-017-0893-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES This study aimed to assess the independent associations of serum levels of vitamin B12 and plasma concentrations of homocysteine with gait speed decline. DESIGN, SETTING, PARTICIPANTS This study utilized longitudinal analysis of participants 50 years or older from The Baltimore Longitudinal Study of Aging, N=774. MEASUREMENTS Gait speed (m/s) was assessed using the 6-meter usual pace test. Vitamin B12 and homocysteine concentrations were collected using standard clinical protocols. Linear mixed effects regression was stratified by baseline age category (50-69, 70-79, and ≥80 years old). RESULTS Mean follow-up time for the total study sample was 5.4 ± 2.0 years. No association between vitamin B12 and gait speed decline over the follow-up time for any age group was found. Elevated homocysteine concentrations were associated with decline in gait speed after adjustment for covariates (50-69: β= -0.005, p=.057; 70-79: β= -0.013, p<.001, ≥80: β= -0.007, p=.054). CONCLUSION Homocysteine and vitamin B12 are inversely related, yet only homocysteine was associated with gait speed decline in this population of healthy older adults. Given these results, future research should be directed towards investigating the relationship in populations with greater variation in vitamin B12 concentrations and other mechanisms influencing homocysteine concentrations.
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Affiliation(s)
- M L Vidoni
- R. Sue Day, University of Texas Health Science Center at Houston School of Public Health, Division of Epidemiology, Human Genetics, and Environmental Science, Michael and Susan Dell Center for Healthy Living, Houston, TX, USA,
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Rafferty M, Roberts A, Schmidt PN, Luo ST, Li K, Simuni T. NIDILRR: Allied Health Referral Variability and Outcomes for People with Parkinson’s Disease: National Parkinson Foundation Quality Improvement Initiative (NPF-QII) Data. Arch Phys Med Rehabil 2016. [DOI: 10.1016/j.apmr.2016.08.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lazaridis C, Yang M, DeSantis SM, Luo ST, Robertson CS. Predictors of intensive care unit length of stay and intracranial pressure in severe traumatic brain injury. J Crit Care 2015; 30:1258-62. [PMID: 26324412 DOI: 10.1016/j.jcrc.2015.08.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 07/11/2015] [Accepted: 08/02/2015] [Indexed: 01/30/2023]
Abstract
OBJECTIVE The aim of this study was to explore the relationship of intracranial pressure (ICP) with intensive care unit (ICU) length of stay in a large cohort of severe traumatic brain injury patients and identify factors associating with prolonged ICU course. METHODS This was a single-center database review of de-identified research data that had been prospectively collected; setting: neurosurgical ICU, Ben Taub General Hospital, Houston, TX. RESULTS In a cohort of 438 severe traumatic brain injury (TBI) patients, 149 (34%) had a motor Glasgow Coma Scale score of 1 to 3 on admission and 284 (65%) had 4 to 5. Intracranial pressure during the ICU course was 19.8±11.2 mm Hg. Favorable outcome was obtained in 148 (34%), and unfavorable, in 211 (48%) patients with a mortality of 28%. ICU length of stay (LOS) was 19.4±13.9 days. Joint modeling of ICP and ICU LOS was undertaken, adjusted for the International Mission for Prognosis and Analysis of Clinical Trials in TBI admission prognostic indicators. A higher ICP was not significantly associated with longer ICU LOS (P=.4). However, presence of a mass lesion on admission head computed tomography was strongly correlated with a prolonged ICU LOS (P=.0007). Diffuse injuries with basal cistern compression or midline shift were marginally associated with a longer ICU LOS (P=.053). CONCLUSIONS ICP, as monitored and managed according to BTF guidelines, is not associated with ICU length of stay. Patients with severe TBI and a mass lesion on admission head computed tomography were found to have prolonged ICU LOS independently of other indicators of injury severity and intracranial pressure course.
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Affiliation(s)
- Christos Lazaridis
- Division of Neurocritical Care, Department of Neurology, Baylor College of Medicine, Houston, TX.
| | - Ming Yang
- Division of Biostatistics, School of Public Health, University of Texas, Houston, TX
| | - Stacia M DeSantis
- Division of Biostatistics, School of Public Health, University of Texas, Houston, TX
| | - Sheng T Luo
- Division of Biostatistics, School of Public Health, University of Texas, Houston, TX
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Kieburtz K, Tilley BC, Elm JJ, Babcock D, Hauser R, Ross GW, Augustine AH, Augustine EU, Aminoff MJ, Bodis-Wollner IG, Boyd J, Cambi F, Chou K, Christine CW, Cines M, Dahodwala N, Derwent L, Dewey RB, Hawthorne K, Houghton DJ, Kamp C, Leehey M, Lew MF, Liang GSL, Luo ST, Mari Z, Morgan JC, Parashos S, Pérez A, Petrovitch H, Rajan S, Reichwein S, Roth JT, Schneider JS, Shannon KM, Simon DK, Simuni T, Singer C, Sudarsky L, Tanner CM, Umeh CC, Williams K, Wills AM. Effect of creatine monohydrate on clinical progression in patients with Parkinson disease: a randomized clinical trial. JAMA 2015; 313:584-93. [PMID: 25668262 PMCID: PMC4349346 DOI: 10.1001/jama.2015.120] [Citation(s) in RCA: 160] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE There are no treatments available to slow or prevent the progression of Parkinson disease, despite its global prevalence and significant health care burden. The National Institute of Neurological Disorders and Stroke Exploratory Trials in Parkinson Disease program was established to promote discovery of potential therapies. OBJECTIVE To determine whether creatine monohydrate was more effective than placebo in slowing long-term clinical decline in participants with Parkinson disease. DESIGN, SETTING, AND PATIENTS The Long-term Study 1, a multicenter, double-blind, parallel-group, placebo-controlled, 1:1 randomized efficacy trial. Participants were recruited from 45 investigative sites in the United States and Canada and included 1741 men and women with early (within 5 years of diagnosis) and treated (receiving dopaminergic therapy) Parkinson disease. Participants were enrolled from March 2007 to May 2010 and followed up until September 2013. INTERVENTIONS Participants were randomized to placebo or creatine (10 g/d) monohydrate for a minimum of 5 years (maximum follow-up, 8 years). MAIN OUTCOMES AND MEASURES The primary outcome measure was a difference in clinical decline from baseline to 5-year follow-up, compared between the 2 treatment groups using a global statistical test. Clinical status was defined by 5 outcome measures: Modified Rankin Scale, Symbol Digit Modalities Test, PDQ-39 Summary Index, Schwab and England Activities of Daily Living scale, and ambulatory capacity. All outcomes were coded such that higher scores indicated worse outcomes and were analyzed by a global statistical test. Higher summed ranks (range, 5-4775) indicate worse outcomes. RESULTS The trial was terminated early for futility based on results of a planned interim analysis of participants enrolled at least 5 years prior to the date of the analysis (n = 955). The median follow-up time was 4 years. Of the 955 participants, the mean of the summed ranks for placebo was 2360 (95% CI, 2249-2470) and for creatine was 2414 (95% CI, 2304-2524). The global statistical test yielded t1865.8 = -0.75 (2-sided P = .45). There were no detectable differences (P < .01 to partially adjust for multiple comparisons) in adverse and serious adverse events by body system. CONCLUSIONS AND RELEVANCE Among patients with early and treated Parkinson disease, treatment with creatine monohydrate for at least 5 years, compared with placebo did not improve clinical outcomes. These findings do not support the use of creatine monohydrate in patients with Parkinson disease. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00449865.
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Affiliation(s)
| | | | | | - Jordan J Elm
- Medical University of South Carolina, Charleston
| | | | | | - G Webster Ross
- Pacific Health Research and Education Institute, Honolulu, Hawaii
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mark F Lew
- University of Southern California, Los Angeles
| | - Grace S Lin Liang
- The Parkinson's Institute and Clinical Center, Sunnyvale, California
| | - Sheng T Luo
- University of Texas Health Science Center at Houston
| | - Zoltan Mari
- Johns Hopkins University, Baltimore, Maryland
| | | | | | - Adriana Pérez
- University of Texas Health Science Center at Houston
| | - Helen Petrovitch
- Pacific Health Research and Education Institute, Honolulu, Hawaii
| | - Suja Rajan
- University of Texas Health Science Center at Houston
| | | | | | | | | | - David K Simon
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | | | | | - Caroline M Tanner
- The Parkinson's Institute and Clinical Center, Sunnyvale, California
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Simuni T, Luo ST, Chou KL, Fernandez H, He B, Parashos S. Rankin scale as a potential measure of global disability in early Parkinson's disease. J Clin Neurosci 2013; 20:1200-3. [PMID: 23810387 DOI: 10.1016/j.jocn.2012.10.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 10/14/2012] [Indexed: 10/26/2022]
Abstract
We conducted an exploratory analysis of the utility of the modified Rankin Scale (mRS) as a global measure of disability in early Parkinson's diesase (PD) using the baseline data from a large cohort of PD patients enrolled in a longitudinal study of creatine. The mRS is scored 0-6 with lower scores reflecting less disability. For the analysis the mRS score was dichotomized at <2 versus ≥2. We explored the association of the mRS with multiple measures of PD-related impairments, including the Unified Parkinson Disease Rating Scale (UPDRS); cognitive function characterized by the Symbol Digit Modalities--verbal, and Scales for Outcomes in Parkinson's disease--cognition (SCOPA-COG); quality of life (Parkinson's disease questionnaire [PDQ-39]) and EuroQOL; Beck Depression Inventory II (BDI); and Total Functional Capacity (TFC). We also investigated the interaction between variables. One thousand seven hundred forty-one patients were included in the analysis of which 374 had a mRS score of 2 or above. In the univariate model, all interested measures except SCOPA-COG (p=0.23) had significant association with mRS (p<0.001) after controlling for confounders. In the multivariate model, UPDRS Part II and III (activities of daily living and motor), BDI, TFC and PDQ-39 were significant (p<0.05). The mRS has a significant association with the wide spectrum of measures of impairment and quality of life in early PD and shows good potential to be a global measure of disability in early PD. The sensitivity of the mRS to change and performance of the scale in more advanced PD will have to be established longitudinally.
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Affiliation(s)
- Tanya Simuni
- Northwestern University Feinberg School of Medicine, Abbott Hall 11th Floor, 710 North Lake Shore Drive, Chicago, IL 60611, USA.
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Berwick M, Oliveria S, Luo ST, Headley A, Bolognia JL. A pilot study using nurse education as an intervention to increase skin self-examination for melanoma. J Cancer Educ 2000; 15:38-40. [PMID: 10730802 DOI: 10.1080/08858190009528651] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
BACKGROUND A pilot study of an intervention using nurse education for skin self-examination (SSE) was conducted in order to determine specific factors that would be important for the design of a larger intervention. METHODS Seventy-five subjects completed a pretest, a posttest, a thorough skin examination by a dermatologist, and an educational session by a nurse. RESULTS Results showed that the subjects increased the frequency of SSE to a predetermined optimal frequency of once every one to two months. Increases in optimal SSE were associated with increases in knowledge about melanoma (p = 0.006). CONCLUSIONS Before intensive campaigns are launched to improve SSE, models incorporating theories of behavioral change should be tested.
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Affiliation(s)
- M Berwick
- Department of Epidemiology, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.
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Abstract
BACKGROUND While the incidence and mortality of melanoma has increased dramatically during the last few decades, survival rates, based on the case-fatality ratio, have apparently improved. Efforts at early detection have probably been effective in the discovery of lesions at a curable stage. However, the effects of lead-time bias need to be accounted for in order to understand the contribution of early detection to the increased incidence. This can best be done by appropriately controlling for depth of the tumour or a surrogate of depth, at diagnosis. METHODS A survival analysis was conducted for 3197 Connecticut residents newly diagnosed with invasive melanoma between 1973 and 1984. Five prognostic variables were evaluated: sex, age at diagnosis, anatomical site, histological type, and year of diagnosis. RESULTS As expected, women and the young had better survival than men and the elderly. Melanomas located on the trunk had poorer prognosis than those on other sites. The survival experience by histological type was significantly different; lentigo maligna melanoma and superficial spreading melanoma had the best survival and nodular melanomas the poorest, while 'other' and unclassifiable melanomas had intermediate survival. When survival by period of diagnosis was controlled by other variables, which included surrogates for disease stage, there was no improvement in survival over time. CONCLUSION These data do not imply that early diagnosis and treatment are ineffective; rather, that within stages of disease, survival improvements did not occur during the period 1973-1984.
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Affiliation(s)
- M Berwick
- Cancer Prevention Research Institute, New York, NY 10010
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