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| 1 | Epidemiology of functional gastrointestinal disorders in children and adolescents: A systematic review显示文摘AIM To assess the prevalence of functional gastrointestinal disorders(FGIDs) in children and adolescents. METHODS P ub Me d, E MB AS E, and S c o pus dat abas e s w e r e searched for original articles from inception to September 2016. The literature search was made in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA) recommendations. For inclusion, each study had to report epidemiological data on FGIDs in children between 4 and 18 years old and contain standardized outcome based on Rome Ⅱ, Ⅲ or Ⅳ criteria. The overall quality of included epidemiological studies was evaluated in accordance with Loney's proposal for prevalence studies of health literature. Two reviewers assessed each study for data inclusion and extraction. Discrepancies were reconciled through discussion with seniors.RESULTS A total of 659 articles were identified from the databases and 16 through manual search. A total of 43 articles fulfilled the eligibility criteria for fulltext reading, with 26 remaining to be included in the final analysis. All studies were written in English and published between 2005 and 2016. Eight(30.8%) articles were performed in North America, five(19.2%) in Latin America, five(19.2%) in Europe, seven(27%) in Asia, and one(3.8%) in Africa. Sample size varied between 114 and 99416 subjects, totaling 132600 individuals. Fourteen(53.9%) studies recruited their target samples from schools, 11(42.3%) from healthcare settings and the remaining one(3.8%) from onlinepanel community. The overall FGID prevalence rates for student samples ranged from 9.9% to 29% to as high as 87% in clinical samples. Cyclic vomiting, irritable bowel syndrome and functional constipation were the most researched conditions, with a prevalence ranging from 0.2% to 6.2%, 0% to 45.1% and 0.5% to 86.9%, respectively. The qualitative appraisal revealed that most of the studies showed average or below average generalizability.CONCLUSION The heterogeneity of the studies on FGIDs must be improved in order to allow comparison. Improvements should include appropriate sampling of representative population, comparable study setting, and consistent data collection. | Alexandre Canon Boronat Ana Paula Ferreira-Maia Alicia Matijasevich Yuan-Pang Wang | 2017 | World Journal of Gastroenterology2017，23，21： | 10 |
| 2 | Chemistry of the direct acid leach,calsinter and pressure digestion acid leach methods for the recovery of alumina from fly ash显示文摘 | KELMERS A D CANON R M | 1982 | Resources and Conservation1982，22，9： | 1 |
| 3 | Buyer-supplier relationshipsand customer firm costs 显示文摘 | Canon J P Homburg C | 2001 | Journal of Marketing2001，65，1： | 1 |
| 4 | Intramural tracking: a feature of esophageal intramural pseudodiverticulosis 显示文摘 | Canon CL Levine MS Cherukuri R | 2000 | AJR2000，175，2： | 1 |
| 5 | Evaluation of wood degradation for timber check dams using time domain reflectome- try water content measurements 显示文摘 | PREVIATI M CANONE D BEVILACQUA I | 2012 | Ecological Engineering2012，44，： | 1 |
| 6 | Internal hernia after gastric bypass:sensitivity and specificity of seven CT signs with surgical correlation and controls显示文摘 | Lockhart ME Tessler FN Canon CL | 2007 | AJR2007，188，3： | 1 |
| 7 | An examination of the nature trust in buyer-seller relationships 显示文摘 | Doney P M Canon J P | 1997 | Journal of Marketing1997，61，4： | 1 |
| 8 | Development and validation of a prognostic score to predict mortality in patients with acute-on-chronic liver failure 显示文摘 | Jalan R Saliba F Pavesi M CANONIC study investigators of the EASL-CLIF Consortium | 2014 | J Hepatol2014，61，5： | 1 |
| 9 | Alogliptin after acute coronary syndrome in patients with type 2 diabetes 显示文摘 | WHITE W B CANON C P HELLER S R | 2013 | N Engl J ned2013，369，14： | 1 |
| 10 | Expandable metal stents for the treatment of colonic obstruction: techniques and outcomes显示文摘 | Todd H. Baron Phillip A. Dean Munford R. Yates Cheri Canon Robert E. Koehler | 1998 | Gastrointestinal Endoscopy1998，，3： | 1 |
| 11 | Equilibrium configuration and tension of flexilbe cable in a uniform flowed 显示文摘 | Genin J Canon T C | 1967 | Journal of Air- craft1967，，4： | 1 |
| 12 | Acute-on-chronic liver failure: A new syndrome that will re-classify cirrhosis 显示文摘 | Arroyo V Moreau R Jalan R EASL-CLIF Consortium CANONIC Study | 2015 | J Hepatol2015，62，1： | 1 |
| 13 | The Spanish organizational structure for organ donation: update 显示文摘 | Miranda B Canon J Cuende N | 2001 | Transplant Rev2001，15，1： | 1 |
| 14 | Evaluation and optimization of the ro-bustness of DAG schedules in heterogeneous environments显示文摘 | CANON L C JEANNOT E | 2010 | IEEETrans on Parallel and Distributed Systems2010，21，4： | 1 |
| 15 | Redefining medical freatment in the management of unstable angina 显示文摘 | Bratmwald E C aliff RM Canon CN | 2000 | Am J Med2000，108，： | 1 |
| 16 | Resectability of pancreatic adenocarcinoma in patients with locally advanced disease downstaged by preoperative therapy : a challenge for MDCT 显示文摘 | Morgan DE Waggoner CN Canon CL Lockhart ME Fine-berg NS Posey JA Vickers SM | 2010 | A JR Am J Roentgenol2010，19，194： | 1 |
| 17 | Intensive versus moderate lipid lowering with statins after acute coronary syndromes显示文摘 | Canon CP Braunwald E McCabe CH | 2004 | N Engl J Med2004，350，15： | 1 |
| 18 | Which is better retroperitoneoscopie or laparoscopic dismembered pyeloplasty in children显示文摘 | CANON S J JAYANTHI VR LOWE GJ | 2007 | J Urol2007，178，： | 1 |
| 19 | TIMI frame count: a quantitative method of assessing coronary artery flow 显示文摘 | Gibson C M Canon C P Daley W L | 1996 | Circula- tion1996，93，： | 1 |
| 20 | Marine calcification as source of carbon dioxide: positive feedback of increasing atmospheric CO2 显示文摘 | Frankignoulle M Canon C Gattuso J | 1994 | Limnology and Oceanography1994，39，2： | 1 |
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