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Featured researches published by Smita Nayak.


American Journal of Preventive Medicine | 2012

Role of video games in improving health-related outcomes: a systematic review.

Brian A. Primack; Mary V. Carroll; Megan McNamara; Mary Lou Klem; Brandy King; Michael Rich; Chun W. Chan; Smita Nayak

CONTEXT Video games represent a multibillion-dollar industry in the U.S. Although video gaming has been associated with many negative health consequences, it also may be useful for therapeutic purposes. The goal of this study was to determine whether video games may be useful in improving health outcomes. EVIDENCE ACQUISITION Literature searches were performed in February 2010 in six databases: the Center on Media and Child Health Database of Research, MEDLINE, CINAHL, PsycINFO, EMBASE, and the Cochrane Central Register of Controlled Trials. Reference lists were hand-searched to identify additional studies. Only RCTs that tested the effect of video games on a positive, clinically relevant health consequence were included. Study selection criteria were strictly defined and applied by two researchers working independently. Study background information (e.g., location, funding source); sample data (e.g., number of study participants, demographics); intervention and control details; outcomes data; and quality measures were abstracted independently by two researchers. EVIDENCE SYNTHESIS Of 1452 articles retrieved using the current search strategy, 38 met all criteria for inclusion. Eligible studies used video games to provide physical therapy, psychological therapy, improved disease self-management, health education, distraction from discomfort, increased physical activity, and skills training for clinicians. Among the 38 studies, a total of 195 health outcomes were examined. Video games improved 69% of psychological therapy outcomes, 59% of physical therapy outcomes, 50% of physical activity outcomes, 46% of clinician skills outcomes, 42% of health education outcomes, 42% of pain distraction outcomes, and 37% of disease self-management outcomes. Study quality was generally poor; for example, two thirds (66%) of studies had follow-up periods of <12 weeks, and only 11% of studies blinded researchers. CONCLUSIONS There is potential promise for video games to improve health outcomes, particularly in the areas of psychological therapy and physical therapy. RCTs with appropriate rigor will help build evidence in this emerging area.


American Journal of Preventive Medicine | 2012

Review and special articleRole of Video Games in Improving Health-Related Outcomes: A Systematic Review

Brian A. Primack; Mary V. Carroll; Megan McNamara; Mary Lou Klem; Brandy King; Michael Rich; Chun W. Chan; Smita Nayak

CONTEXT Video games represent a multibillion-dollar industry in the U.S. Although video gaming has been associated with many negative health consequences, it also may be useful for therapeutic purposes. The goal of this study was to determine whether video games may be useful in improving health outcomes. EVIDENCE ACQUISITION Literature searches were performed in February 2010 in six databases: the Center on Media and Child Health Database of Research, MEDLINE, CINAHL, PsycINFO, EMBASE, and the Cochrane Central Register of Controlled Trials. Reference lists were hand-searched to identify additional studies. Only RCTs that tested the effect of video games on a positive, clinically relevant health consequence were included. Study selection criteria were strictly defined and applied by two researchers working independently. Study background information (e.g., location, funding source); sample data (e.g., number of study participants, demographics); intervention and control details; outcomes data; and quality measures were abstracted independently by two researchers. EVIDENCE SYNTHESIS Of 1452 articles retrieved using the current search strategy, 38 met all criteria for inclusion. Eligible studies used video games to provide physical therapy, psychological therapy, improved disease self-management, health education, distraction from discomfort, increased physical activity, and skills training for clinicians. Among the 38 studies, a total of 195 health outcomes were examined. Video games improved 69% of psychological therapy outcomes, 59% of physical therapy outcomes, 50% of physical activity outcomes, 46% of clinician skills outcomes, 42% of health education outcomes, 42% of pain distraction outcomes, and 37% of disease self-management outcomes. Study quality was generally poor; for example, two thirds (66%) of studies had follow-up periods of <12 weeks, and only 11% of studies blinded researchers. CONCLUSIONS There is potential promise for video games to improve health outcomes, particularly in the areas of psychological therapy and physical therapy. RCTs with appropriate rigor will help build evidence in this emerging area.


Journal of Bone and Joint Surgery, American Volume | 2012

Impact of Total Shoulder Arthroplasty on Generic and Shoulder-Specific Health-Related Quality-of-Life Measures A Systematic Literature Review and Meta-Analysis

Michael J. Carter; Ted R. Mikuls; Smita Nayak; Edward V. Fehringer; Kaleb Michaud

BACKGROUND Total shoulder arthroplasty is increasingly used in the treatment of arthritis. However, the effect of total shoulder arthroplasty on health-related quality of life has not been fully established. The goal of this systematic review and meta-analysis was to characterize the change in generic and shoulder-specific health-related quality-of-life measures resulting from total shoulder arthroplasty. METHODS We identified published studies reporting preoperative and postoperative health-related quality-of-life outcomes for patients receiving total shoulder arthroplasty. Health-related quality-of-life measures were identified, and meta-analysis was used to calculate standardized mean differences (SMDs, reflective of the effect size) and 95% confidence intervals for each scale. RESULTS Twenty studies (1576 total shoulder replacements) met the inclusion criteria. Outcome measures were analyzed after an average postoperative follow-up duration of 3.7 ± 2.2 years. The Short Form-36 demonstrated significant improvement in physical component summary scores (SMD = 0.7, p < 0.001) but not in mental component summary scores (SMD = 0.2, p = 0.37). Significant improvements were observed in the visual analog scale score for pain (SMD = -2.5, p < 0.001) and scores on three shoulder-specific measures: the Constant score (SMD = 2.7, p < 0.001), American Shoulder and Elbow Surgeons score (SMD = 2.9, p < 0.001), and Simple Shoulder Test (SMD = 2.3, p < 0.001). CONCLUSIONS Total shoulder arthroplasty leads to significant improvements in scores for function and pain. Shoulder-specific measures of function consistently showed the greatest degree of improvement, with large effect sizes. Total shoulder arthroplasty also leads to significant improvements in overall physical well-being, with a moderate-to-large effect size.


Public Health Reports | 2016

Systematic Review and Meta-Analysis of Inhaled Toxicants from Waterpipe and Cigarette Smoking

Brian A. Primack; Mary V. Carroll; Patricia M. Weiss; Alan Shihadeh; Ariel Shensa; Steven T. Farley; Michael J. Fine; Thomas Eissenberg; Smita Nayak

Objective. Waterpipe tobacco smoking (WTS) is an emerging trend worldwide. To inform public health policy and educational programming, we systematically reviewed the biomedical literature to compute the inhaled smoke volume, nicotine, tar, and carbon monoxide (CO) associated with a single WTS session and a single cigarette. Methods. We searched seven biomedical bibliographic databases for controlled laboratory or natural environment studies designed to mimic human tobacco consumption. Included studies quantified the mainstream smoke of a single cigarette and/or single WTS session for smoke volume, nicotine, tar, and/or CO. We conducted meta-analyses to calculate summary estimates for the inhalation of each unique substance for each mode of tobacco consumption. We assessed between-study heterogeneity using chi-squared and I-squared statistics. Results. Sufficient data from 17 studies were available to derive pooled estimates for inhalation of each exposure via each smoking method. Two researchers working independently abstracted measurement of smoke volume in liters, and nicotine, tar, and CO in milligrams. All numbers included in meta-analyses matched precisely between the two researchers (100% agreement, Cohens κ=1.00). Whereas one WTS session was associated with 74.1 liters of smoke inhalation (95% confidence interval [CI] 38.2, 110.0), one cigarette was associated with 0.6 liters of smoke (95% CI 0.5, 0.7). One WTS session was also associated with higher levels of nicotine, tar, and CO. Conclusions. One WTS session consistently exposed users to larger smoke volumes and higher levels of tobacco toxicants compared with one cigarette. These computed estimates may be valuable to emphasize in prevention programming.


Drug Safety | 2008

Risk of hypospadias in offspring of women using loratadine during pregnancy: a systematic review and meta-analysis

Eleanor Bimla Schwarz; Myla Moretti; Smita Nayak; Gideon Koren

AbstractBackground: Loratadine, a second-generation antihistamine, is commonly used to treat seasonal allergies. Some studies have suggested that use of loratadine by pregnant women increases the risk of hypospadias in male offspring. Objective: This meta-analysis was designed to assess the strength of the association between loratadine and hypospadias. Methods: To locate pertinent articles published in any language from January 1989 until August 2007, we searched electronic databases (MEDLINE, OVID, EMBASE, SCOPUS, TOXLINE Special, ReproTox, TERIS, CINAHL and others), conference proceedings and bibliographies. Studies were eligible for this analysis if they were cohort, case-control or case series studies that reported the incidence of hypospadias in the offspring of women who were or were not exposed to loratadine during pregnancy. Two authors independently extracted information on study design, participant characteristics, measures of outcome, control for potential confounding factors and risk estimates using a standardized data collection form. The Newcastle-Ottawa Scale was then used to assess the quality of each study. We used a random-effects meta-analysis model to combine the risk data. Results: In 1402 potentially relevant titles, we found three case-control studies and seven cohort studies that reported the incidence of hypospadias or other congenital malformations in offspring of women who did or did not use loratadine during pregnancy. Together the studies in our meta-analysis provided information about 453 053 male births in Brazil, Canada, Denmark, Israel, Italy, Sweden, the UK and the US.


Health Education Journal | 2010

Health Beliefs about Osteoporosis and Osteoporosis Screening in Older Women and Men.

Smita Nayak; Mark S. Roberts; Chung-Chou H. Chang; Susan L. Greenspan

Objective: To examine older adults’ beliefs about osteoporosis and osteoporosis screening to identify barriers to screening. Design: Cross-sectional mailed survey. Setting: Western Pennsylvania. Methods: Surveys were mailed to 1,830 women and men aged 60 years and older. The survey assessed socio-demographic characteristics, osteoporosis and general health-related characteristics, and beliefs about osteoporosis severity, susceptibility, screening self-efficacy, and screening response efficacy. Analyses included Wilcoxon rank-sum tests to compare belief dimension scores, and multivariable ordinal logistic regression analyses to evaluate association between osteoporosis beliefs and potential explanatory variables. Results: Surveys were completed by 1,268 individuals (69.3 per cent). Mean age of respondents was 73.3 years, and most were female (58.7 per cent). Individuals demonstrated greatest belief in the severity of osteoporosis and least belief in personal susceptibility (P < .001). Older individuals believed less strongly than younger individuals in osteoporosis severity (OR, 0.95 per one year increase in age; 95 per cent CI, 0.92—0.97) and response efficacy (OR, 0.97 per one year increase in age; 95 per cent CI, 0.95—0.99). Women believed more strongly than men in osteoporosis susceptibility (OR, 1.87; 95 per cent CI, 1.38—2.53) and screening self-efficacy (OR, 2.87; 95 per cent CI, 1.17—7.07). Individuals with high self-rated health status had greater belief than those with low self-rated health status in screening self-efficacy (OR, 3.59; 95 per cent CI, 1.89—6.83). Conclusion: Older adults demonstrate several beliefs that may be barriers to osteoporosis screening, including low belief in susceptibility to osteoporosis. These beliefs should be targeted with patient education to improve screening rates.


Journal of the American Geriatrics Society | 2012

FRAX or Fiction:: Determining Optimal Screening Strategies for Treatment of Osteoporosis in Residents in Long-Term Care Facilities

Susan L. Greenspan; Subashan Perera; David A. Nace; Kimberly S. Zukowski; Mary Anne Ferchak; Carroll J. Lee; Smita Nayak; Neil M. Resnick

To examine screening strategies for osteoporosis and fractures for treatment of long‐term care residents.


PLOS ONE | 2012

Impact of Generic Alendronate Cost on the Cost-Effectiveness of Osteoporosis Screening and Treatment

Smita Nayak; Mark S. Roberts; Susan L. Greenspan

Introduction Since alendronate became available in generic form in the Unites States in 2008, its price has been decreasing. The objective of this study was to investigate the impact of alendronate cost on the cost-effectiveness of osteoporosis screening and treatment in postmenopausal women. Methods Microsimulation cost-effectiveness model of osteoporosis screening and treatment for U.S. women age 65 and older. We assumed screening initiation at age 65 with central dual-energy x-ray absorptiometry (DXA), and alendronate treatment for individuals with osteoporosis; with a comparator of “no screening” and treatment only after fracture occurrence. We evaluated annual alendronate costs of


Osteoporosis International | 2009

Factors associated with diagnosis and treatment of osteoporosis in older adults

Smita Nayak; Mpp Mark S. Roberts Md; Susan L. Greenspan

20 through


Journal of General Internal Medicine | 2009

Factors Associated with Osteoporosis Screening and Recommendations for Osteoporosis Screening in Older Adults

Smita Nayak; Mpp Mark S. Roberts Md; Susan L. Greenspan

800; outcome measures included fractures; nursing home admission; medication adverse events; death; costs; quality-adjusted life-years (QALYs); and incremental cost-effectiveness ratios (ICERs) in 2010 U.S. dollars per QALY gained. A lifetime time horizon was used, and direct costs were included. Base-case and sensitivity analyses were performed. Results Base-case analysis results showed that at annual alendronate costs of

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Mary Lou Klem

University of Pittsburgh

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Megan McNamara

Case Western Reserve University

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Chun W. Chan

International Medical University

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Ariel Shensa

University of Pittsburgh

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