Estudios originales

Published on 29 de noviembre de 2022 | http://doi.org/10.5867/medwave.2022.10.2654

An exploratory study of citations in systematic reviews of randomized trials published in Latin American journals

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Reasons for exclusion from the meta-analysis.
RCT titleReason of exclusion from MA
Deficient lactose digestion and intolerance in a group of patients with chronic nonspecific ulcerative colitis: a controlled, double-blind, cross-over clinical trial.Incomplete data: “Because no specific controls were provided”.
Effect of endovenous morphine vs. ketorolac on proinflammatory cytokines during postoperative analgesia in laparoscopic cholecystectomy.Not specified
Comparative study of preventive protocols in children at high cariogenic risk.Not specified
Type of delivery and gestational age is not affected by pregnant Latin-American women engaging in vigorous exercise: a secondary analysis of data from a controlled randomized trial.High risk of bias
Decrease of liver fat content by aerobic exercise or metformin therapy in overweight or obese women.Not appropriate for analysis: “This analysis was not feasible for nutritional/behavior interventions due to the design and the small number of studies”.
Treatment of nonalcoholic steatohepatitis with probiotics. A proof-of-concept study.Not appropriate for analysis: “Only RCTs assessing omega-3 fatty acids (n = 4) and resveratrol (n = 4) qualified for meta-analysis”.
Gingival response in orthodontic patients: Comparative study between self-ligating and conventional brackets.Incomplete data: “Four articles were discarded as they did not report metadata related to periodontal health parameters or because these were reported using another measure of central tendency that was not the mean”.
Effect of zinc amino acid chelate and zinc sulfate in the incidence of respiratory infection and diarrhea among preschool children in child daycare centers.Not appropriate for analysis: “If it was not possible to synthesize the data from the included studies, we provided a narrative synthesis of the results”.

Source, Prepared by the authors based on the study results.