For each child at least two valid, quality-controlled measurements (operator index ≥75%) are recorded and averaged.
We included studies that employed three commonly used valid quality improvement designs: RCTs, non-randomised studies with concurrent controls or controlled before and after studies.
The NFNAP employs statistically valid sampling plans, comprehensive quality control, and USDA analytical oversight to generate new and updated analytical data for food components.
These programmes should be grounded in change theory, include evidence based interventions, valid measures, and data quality control.
In all, there were over 300 million valid sequence reads obtained from the 103 samples ("valid" sequence reads passing our quality control filters described in Methods), of which about 216 million mapped to known mature miRNAs, and an additional 15.6 million mapped to a known miRNA hairpin sequence (these sequences presumably representing the byproducts of miRNA processing).
A total of 358 women were fully enrolled by these criteria, of whom 344 had valid airborne PAH data (meeting quality control criteria).
In the absence of a distinct glass transition region, it is proposed that ice melting could be considered as the sole valid indicator of molecular mobility and quality control for frozen hydrated gluten.
1. "Reproducibility of Results" 2. Quality control/ 3. ((valid$ or reliab$ or quality or accura$adj2j2 (result$ or report$ or data)).tw. 4. (good adj1 practice$).tw. 5. Guidelines as Topic/ 6. (guideline$ or checklist$).tw. 7. or/1-6 8. (model$adj33 (stud$ or method$ or process$ or simulation)).tw.tw
After quality control, approximately 169,850,000 valid reads and roughly 7.9 Gb of nucleotides were obtained.
After quality control, 333.6 million valid reads were recorded, corresponding to 32.3 Gb of sequence data.
Blood lead levels measured in epidemiologic studies with valid instruments and standardized calibration and quality control procedures have been reported in the literature for > 35 years.
