Background: More than half of adverse drug events in pediatric patients are avoidable and blocking medication errors at the prescribing stage might be one of the most effective preventive measures. Objective : To form a tool (a series of criteria) for detecting potentially inappropriate prescriptions in children, promote clinical rational drug use and reduce risks of medication in children. Methods: Potentially inappropriate prescription propositions for children were collected through a systematic review. Then, the Delphi technique was adopted to form the final criteria. Panelists were asked to use a 5-point Likert scale to rate their agreement with each potentially inappropriate prescription proposition and were encouraged to add new propositions based on their clinical experience and knowledge. After 2 rounds of Delphi survey and propositions were fully revised and improved, the final criteria for identifying potentially inappropriate prescriptions in children were formed. Results: The final criteria for identifying potential inappropriate prescriptions in children has 136 propositions, which were divided into "criteria for children with non-specific diseases/conditions" (71 propositions: 68 for potentially inappropriate medication, 3 for potential prescribing omission) and "criteria for children with specific diseases/conditions" (65 propositions: 55 for potentially inappropriate medication, 10 for potential prescribing omission), according to whether the proposition was about identifying specific risks associated with one drug in children with a specific other diseases/conditions that do not exist in children with other diseases/conditions. Conclusion: A tool for screening potentially inappropriate prescriptions in children is formed to detect potentially inappropriate medication and prescribing omission in pediatrics and is available to all medical professionals liable to prescribe or dispense medicines to children.

Background: Accessibility of medicines for children is a matter of global concern. Medicines prescribed for children are often off-label. To formulate appropriate policies and undertake necessary interventions to improve access to medicines for children, it is necessary to evaluate the accessibility of medicines for children. However, there is no systematic review of the medicine accessibility for children. Methods: Relevant studies were identified through searching Pubmed, Embase, CNKI, Wanfang, VIP, World Health Organization website, and Health Action International website. Besides, the references of included studies as a supplementary search were read. We extracted the basic information of articles (the first author, published year, the name of journal, research institution, etc.), the basic study characteristics (survey area, survey time, survey method, survey medicine lists, the number of medicine outlets surveyed, etc.), and the study results (the current situation of the accessibility of medicines for children, including the availability, price, and affordability of medicines for children, etc.). Two reviewers independently selected studies and extracted the data. Descriptive analysis methods to analyze the current situation of the accessibility of children's medicines were used. Results: A total of 18 multicenter cross-sectional studies were included in this systematic review, which were from low-income and middle-income countries. Seventeen studies (17/18, 94.4%) used the WHO/Health Action International (HAI) medicine price methodology to investigate the accessibility of medicines for children. Fifteen studies (15/18, 83.3%) were selected to investigate medicines based on the WHO Model List of Essential Medicines for Children (WHO EMLc). In the public sectors, the availability of originator brands (OBs) ranged from 0 to 52.0%, with a median of 24.2%, and the availability of lowest-priced generics (LPGs) ranged from 17.0 to 72.6%, with a median of 38.1%. In the private sectors, the availability of OBs ranged from 8.9 to 80%, with a median of 21.2%. The availability of LPGs ranged from 20.6 to 72.2%, with a median of 35.9%. In most regions, the availability of OBs in the private sectors was higher than in the public sectors. Collectively, in the price of medicines for children, the median price ratio (MPR) of the OBs in the public sectors and private sectors were much higher than that of the LPGs. And the affordability of the LPGs in the public sectors and private sectors was higher than that of originator brands (OBs). Conclusion: The availability of medicines for children is low in both the public sectors and private sectors in low-income and middle-income countries. The MPR of originator brands (OBs) is higher than that of lowest-priced generics (LPGs), and the most lowest-priced generics (LPGs) have better affordability.