Obtaining large sample sizes for pediatric SLIT trials is challenging, but a Bayesian approach using prior adult data can reduce the necessary sample size.
3 Several methods for defining an appropriate sample size for pediatric population PK studies have been proposed, each of which is associated with relative strengths and weaknesses.
Total IgG levels were higher for samples from pediatric patients than for those from adult patients, but no age-specific associations with death or hemorrhage were observed for this biomarker.
Using NCCLS bone marrow samples, we have screened for FLT3 mutations in the largest sample of pediatric leukemias yet reported.
However, 78% of our sample of pediatric protocols included the provision of written study information specifically for children.
Pediatric blood samples were taken for pediatric HIV-1 diagnosis at Day 2, week 4 6, then three monthly until one year, month 18 and 24 and two months after complete cessation of breastfeeding if any.
Self-prescribed antibiotic, microorganisms with slow growth on culture media, viral causes of keratitis, improper corneal sampling, and the inherent difficulty in getting corneal samples from pediatric patients may account for the low positivity rate observed in our study.
Power and sample size calculations are vitally important for pediatric trials, as most drug development programs only conduct a single pediatric trial, the results of which are then used to justify dosing recommendations for future studies and regulatory approval.
Overall participant retention rate in our study was 64%%, which is lower than but comparable to the 76.8 % rate (25) in a recent study conducted across purposively sampled sites with dedicated clinical staff for pediatric HIV.
But, the choice of obtaining reference samples from adult blood donors while testing for pediatric patients looks controversial.
