Forms used for data collection in the study entitled: “Risk factors for adverse drug reactions in pediatric inpatients: a cohort study”Forms 1 and 2 must be used in the first pharmaceutical consultation after hospital admission of the patient:i) form 1 is aimed at obtaining information on the prior history of ADR of the patient; andii) form 2 is aimed at obtaining information on the prior history of use of the drug.Forms 3-6 must be used for the daily recording of information observed in medical prescriptions.i) form 3 is used to record potential drug interactions;ii) form 4 for registration of off-label drugs prescribed;iii) form 5 for the daily recording of the use of drugs; andiv) form 6 for daily monitoring of prescription errors.Furthermore, form 7 must be used for the registration of abnormal laboratory tests or other suspected adverse events.