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Journal of Psychiatric Research Sep 2022Epidemiological studies have provided varying prevalence estimates of trichotillomania (TTM) and other hair-pulling behaviors. We performed a systematic review and... (Meta-Analysis)
Meta-Analysis
Epidemiological studies have provided varying prevalence estimates of trichotillomania (TTM) and other hair-pulling behaviors. We performed a systematic review and meta-analysis to provide data-driven prevalence estimates of TTM and hair-pulling. PubMed, PsycInfo and Embase were searched on June 2020 (updated in November 2021). Studies reporting the frequency of TTM defined by Diagnostic and Statistical Manual of Mental Disorders (DSM) criteria or hair-pulling behaviors were included. Prevalence data was extracted for both genders, and female-to-male odds ratios (OR) were computed for TTM and any hair-pulling behaviors. Data were pooled through random-effects meta-analyses. Of the 713 records identified through database searches, 30 studies involving 38,526 participants were included. Meta-analyses indicated TTM had a prevalence of 1.14% (95% CI 0.66%, 1.96%), while any hair-pulling behavior had a prevalence of 8.84% (95% CI 6.33%, 12.20%). Meta-analyses demonstrated females were at an increased risk of any hair-pulling when noticeable hair loss was required (OR = 2.23, 95% CI 1.60, 3.10, p < 0.0001), but not of any hair-pulling when noticeable hair loss was not required (OR = 0.90, 95% CI 0.72, 1.64, p = 0.33). Meta-analyses did not indicate female preponderance in TTM (k = 10; N = 22,775; OR = 1.29; 95% CI 0.91, 1.83; I = 28%, p = 0.15), although there was considerable heterogeneity across studies. This study demonstrates that TTM impacts ∼1% of the population, while general hair-pulling behaviors affects ∼8%, highlighting the significant public health impact of this understudied condition. Additional research should clarify the gender distribution of TTM in epidemiological samples.
Topics: Diagnostic and Statistical Manual of Mental Disorders; Female; Humans; Male; Prevalence; Trichotillomania
PubMed: 35802953
DOI: 10.1016/j.jpsychires.2022.06.058 -
The Psychiatric Quarterly Mar 2022This systematic review was conducted to determine the prevalence of mental disorders among children and adults in Uganda. A comprehensive systematic search for relevant... (Meta-Analysis)
Meta-Analysis Review
This systematic review was conducted to determine the prevalence of mental disorders among children and adults in Uganda. A comprehensive systematic search for relevant studies reporting prevalence of mental disorders in children or adults in Uganda was conducted in PubMed, Embase, PsycINFO, Scopus, Web of Science databases and grey literature sources. Study was eligible if, validated instrument based on the International Classification of Diseases or Diagnostic and Statistical Manual of Mental Disorders criteria to assess a mental disorder was used. Eligible studies were critically appraised, prevalence data extracted and pooled using the random-effects model. Certainty in the pooled prevalence estimates was evaluated using the Grading of Recommendation, Assessment, Development and Evaluation approach. A total of 632 records were obtained, of which 26 articles from 24 studies conducted in Uganda were included in the review. Overall and with moderate level of certainty, the prevalence of any mental disorder in Uganda was 22.9% (95% C.I 11.0% - 34.9%) in children and 24.2% (95% C.I 19.8% - 28.6%) in adults. Prevalence of anxiety disorders was 14.4% (95% C.I 4.9% - 24.0%) in children and 20.2% (95% C.I 14.5% - 25.9%) in adults. The prevalence of current depressive disorders was 22.2% (95% C.I 9.2% - 35.2%) in children and 21.2% (95% C.I 16.8% - 25.6%) in adults. Eating disorder and psychotic syndrome disorder were also reported. Our findings suggest that depression and anxiety disorders are common mental disorders in Uganda, affecting approximately one in four persons. The findings provide essential insights for health service planning, clinical practice, and future epidemiological research in Uganda.
Topics: Adult; Anxiety Disorders; Child; Diagnostic and Statistical Manual of Mental Disorders; Humans; Mental Disorders; Prevalence; Uganda
PubMed: 34427855
DOI: 10.1007/s11126-021-09941-8 -
The Veterinary Clinics of North... Mar 2023Veterinarians may be asked to assess the presence, absence, or prevalence of a disease in an animal population or to compare the effects of management factors on disease... (Review)
Review
Veterinarians may be asked to assess the presence, absence, or prevalence of a disease in an animal population or to compare the effects of management factors on disease status or production performance. The scope of diagnostic investigations in ruminant populations is often limited by the availability of time, money, and animal handling infrastructure. Selecting the correct number and type of animals to sample maximizes the benefits of the investigation, while minimizing costs. To meet the objectives of the study, the veterinarian must understand the statistical elements that need to be considered to calculate the appropriate sample size.
Topics: Animals; Humans; Ruminants; Veterinarians; Prevalence
PubMed: 36731998
DOI: 10.1016/j.cvfa.2022.10.002 -
PloS One 2022In Ethiopia limited information is available regarding the prevalence and predictors of anemia in pregnancy. This systematic review and meta-analysis estimated the... (Meta-Analysis)
Meta-Analysis
BACKGROUND
In Ethiopia limited information is available regarding the prevalence and predictors of anemia in pregnancy. This systematic review and meta-analysis estimated the pooled prevalence of anemia among pregnant women in Ethiopia and also identified its predictors.
MATERIALS AND METHODS
The published primary studies were searched in the following electronic databases; PubMed/Medline, Google scholars, AJOL, and EMBASE. All primary studies published from 01/01/2010 to 30/05/2020 and written in English language were included without restriction on study setting and design. Critical appraisal of all available articles was done and extracted data was analyzed using STATA software version 14. The pooled prevalence of anemia was presented using a forest plot. The I2 statistical test for heterogeneity, and the Egger's and Begg's tests for publication bias were used. The relative risk was used to assess the association of predictor variables with anemia.
RESULT
After screening 274 articles, sixty studies were included in the analysis. The pooled prevalence of anemia among pregnant women was 26.4(95% CI: 23.1, 29.6). Sub-group analysis showed higher pooled prevalence from community-based studies than institutional-based studies. Factors that were protective against maternal anemia included urban residence, formal education and smaller family size. Short birth interval and not having antenatal care (ANC) are associated with a higher risk of maternal anemia. Women with low dietary diversity [RR: 2.61(95% CI, 1.85, 3.68)], mid-upper arm circumference (MUAC) less than 23 cm [RR: 2.35(95% CI, 1.53, 3.68)] and those not taking iron-folic acid [RR: 1.53(95% CI: 1.30, 1.81)] also had a higher risk of anemia.
CONCLUSION
Almost one in four pregnant women in Ethiopia had anemia. Being literate, living in urban areas with small family size and adequate birth spacing, as well as good dietary diversity are associated with a lower risk of anemia in pregnancy.
REGISTRATION NUMBER
(ID: CRD42020211054).
Topics: Anemia; Ethiopia; Female; Humans; Pregnancy; Pregnant Women; Prenatal Care; Prevalence
PubMed: 35895619
DOI: 10.1371/journal.pone.0267005 -
Anales de Pediatria Aug 2023A high prevalence of gastrointestinal (GI) symptoms has been described in children and adolescents with autism spectrum disorder (ASD). In addition, there is evidence... (Meta-Analysis)
Meta-Analysis
INTRODUCTION
A high prevalence of gastrointestinal (GI) symptoms has been described in children and adolescents with autism spectrum disorder (ASD). In addition, there is evidence that presence of GI symptoms is associated to greater severity of ASD. However, the frequency of GI symptoms in children and adolescents with ASD varies widely across studies, and their true prevalence is unknown. Therefore, the objective of this study was to estimate the prevalence of GI symptoms in children and adolescents with ASD.
MATERIAL AND METHOD
We conducted a meta-analysis following the PRISMA guidelines. We carried out a rapid systematic search for recent clinical and observational studies published from August 2012 in PubMed. The statistical analyses were performed with the software R.
RESULTS
Of 91 potentially eligible articles, only 8 met our inclusion criteria. The prevalence of GI symptoms ranged between 0% and 69%, with an estimated general prevalence of 33% (95% CI, 13%-57%), higher than that reported by a previous meta-analysis for the general paediatric population. This difference is even greater in the specific comparison of studies that applied the paediatric version of the ROME III questionnaire (QPGS-ROME III).
CONCLUSIONS
The results confirmed the hypothesis that there is a higher prevalence of functional GI symptoms in paediatric patients with ASD compared to their neurotypical peers.
Topics: Adolescent; Humans; Child; Autism Spectrum Disorder; Prevalence; Gastrointestinal Diseases; Surveys and Questionnaires
PubMed: 37474417
DOI: 10.1016/j.anpede.2023.07.003 -
Pediatric Annals Jun 2018Recognizing eating disorders in the pediatric population can be challenging for outpatient providers. With the high prevalence of these disorders in children and... (Review)
Review
Recognizing eating disorders in the pediatric population can be challenging for outpatient providers. With the high prevalence of these disorders in children and adolescents, it is critical that pediatricians recognize these disorders and connect these children and families with available treatments. This article provides a review of the current diagnostic criteria for pica, rumination disorder, anorexia nervosa, bulimia nervosa, avoidant restrictive food intake disorder, binge-eating disorder, other specified feeding or eating disorder, and unspecified feeding or eating disorder as described in The Diagnostic and Statistical Manual of Mental Disorders, fifth edition. Recommendations for initial medical evaluation and helpful screening measures are discussed. [Pediatr Ann. 2018;47(6):e244-e249.].
Topics: Adolescent; Child; Diagnostic and Statistical Manual of Mental Disorders; Feeding and Eating Disorders; Female; Humans; Male; Prevalence
PubMed: 29898236
DOI: 10.3928/19382359-20180523-02 -
BMC Oral Health Sep 2023Oral leukoplakia(OLK) is a common oral potentially malignant disorder. The global prevalence of solely OLK was published in 2003, while the prevalence varied among... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Oral leukoplakia(OLK) is a common oral potentially malignant disorder. The global prevalence of solely OLK was published in 2003, while the prevalence varied among different studies. In recent years, large-scale summary and definition-related analyses obtain insufficient attention. This study aimed to perform a systematic review of prevalence studies of oral leukoplakia and assess predisposing factors of its occurrence.
METHODS
The search terms ("Oral leukoplakia" OR OLK OR leukoplakia) AND (prevalence OR incidence OR epidemiology) were searched in databases (Pubmed, Embase, Scopus, and Web of Science) for OLK studies published from January 1996 until December 2022. The estimated prevalence calculation and risk of bias analysis used STATA 16.0.
RESULTS
We obtained 69 studies, including 1,263,028 participants, from 28 countries, and 6 continents. The prevalence was 1.39%, varying from 0.12 to 33.33%. The overall pooled estimated prevalence of OLK was 2.23% for population-based studies, 1.36% for clinic-based population studies, and 9.10% for specific populations. The pooled prevalence in different continents ranged from 0.33 to 11.74% with a statistical difference in the population-based calculation. The estimated prevalence of OLK was higher in males than in females. Those who smoked and consumed alcohol had a higher prevalence than those who did not.
CONCLUSION
Combining data from 69 published studies, the prevalence of OLK was determined as 1.39% and the pooling estimated global prevalence was 3.41%. The prevalence was relatively consistent and stable across different continents and different definitions. A higher pooled estimated prevalence was found among males, those aged over 60 years old, smokers, and alcohol consumers. The results from the included studies in this systematic review revealed that the prevalence was relatively consistent and stable across various definitions and continents, which may help in developing global treatment and prevention strategies for oral leukoplakia.
Topics: Female; Male; Humans; Middle Aged; Aged; Prevalence; Leukoplakia, Oral; Databases, Factual; Ethanol; Research Design
PubMed: 37670255
DOI: 10.1186/s12903-023-03342-y -
Sleep Medicine Reviews Apr 2023The possible role of inflammatory factors in the pathogenesis of restless legs syndrome (RLS) is not well understood. Because several inflammatory diseases have shown an... (Meta-Analysis)
Meta-Analysis Review
The possible role of inflammatory factors in the pathogenesis of restless legs syndrome (RLS) is not well understood. Because several inflammatory diseases have shown an association with the risk for RLS, the measurement of serum/plasma levels of inflammatory factors has been a matter of a scarce number of studies. We performed a systematic review and a meta-analysis to assess the possible association of serum/plasma levels of inflammatory markers with the risk for RLS. Our results showed a significant trend towards higher serum/plasma C reactive protein (CRP) levels and higher neutrophil-to-lymphocyte (NLR) ratio in patients diagnosed with RLS than in controls, although statistical significance disappeared after applying the random-effects model. Further studies are needed to confirm the suggested possible role of inflammatory factors in the pathogenesis of RLS.
Topics: Humans; Restless Legs Syndrome; Prevalence
PubMed: 36634410
DOI: 10.1016/j.smrv.2022.101744 -
Handbook of Clinical Neurology 2020Classification is a tool for communication so that when clinicians, policy-makers, or researchers refer to some features they talk about the same thing. The...
Classification is a tool for communication so that when clinicians, policy-makers, or researchers refer to some features they talk about the same thing. The classification of neurodevelopmental problems in children and adolescents is crucial to better understand their prevalence and the intervention or treatment that should be provided. However, such classification might be challenging, especially when development aspects have to be taken into account. This chapter aims to provide a better understanding of the classification of neurodevelopmental disabilities. Thus, we provide an overview of the different classification systems that are the most commonly used, such as the well-known Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD). Moreover, we address opportunities and challenges inherent to the classification of neurodevelopmental disorders and the implications for clinical practice and research areas.
Topics: Adolescent; Child; Diagnostic and Statistical Manual of Mental Disorders; Humans; International Classification of Diseases; Prevalence
PubMed: 32958181
DOI: 10.1016/B978-0-444-64150-2.00001-0 -
Travel Medicine and Infectious Disease 2022According to published reports from the World Health Organization, it is estimated that more than 3% of the world's population is infected with HCV. Given the impact of... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
According to published reports from the World Health Organization, it is estimated that more than 3% of the world's population is infected with HCV. Given the impact of various factors on the prevalence of HCV in the world's population and the lack of general statistics around the world, this study aims to review the studies conducted in this field and statistical analysis of the results of general statistical studies on the prevalence of HCV in the world population.
METHODS
In this study, systematic review and meta-analysis of information of the studies related to the prevalence of HCV in the world using keywords including: Prevalence, HCV, Hepatitis C, Healthy Population, Healthy subjects, and General Population in SID, MagIran, IranMedex, IranDoc, ScienceDirect, Embase, Scopus, PubMed, Web of Science (WoS) databases and Google Scholar search engine were extracted without time limit until April 2020. In order to perform the analysis of qualified studies, the model of random effects was used, and the inconsistency of studies with I index was investigated. Data analysis was performed with Comprehensive Meta-Analysis (Version 2).
RESULTS
In a study of 98 studies with a total sample size of 236,964 people in the world, the overall prevalence of HCV was 1.8% (95% CI: 1.4%-2.3%). Also, according to the subgroup analysis in different continents; the highest prevalence of HCV in the African continent was 7.1% (95% CI: 4.4-11.5%).
CONCLUSION
The results of this study show that the prevalence of hepatitis C in the world's population, especially in Africa, is almost high. Therefore, the officials of the World Health Organization should design measures to prevent the spread of this infection.
Topics: Africa; Hepacivirus; Hepatitis C; Humans; Prevalence
PubMed: 35007756
DOI: 10.1016/j.tmaid.2022.102255