We conducted an independent replication of a primary care database-based study using a different primary care database, sampling from the same population.
To conduct a fully independent and external validation of a research study based on one electronic health record database, using a different electronic database sampling the same population.
Non-UK practitioners were excluded from the study by removing them from the professional register database sampling frames before the study sample was randomly selected.
14 To help address this issue, comparisons that apply identical methods to two or more independent databases sampling from the same underlying patient population are useful.
You complain of the DNA database samples being retained.
I believed I had a solution to this cumbersome and costly process: create subgroups from the database, sample policies from each, repeat the process several times, then combine the results.
Then database samples having the shortest distance to the example were retrieved.
The PowerPlex Y23 System is a 23-loci, 5-color Y-STR multiplex designed for genotyping forensic casework samples, database samples and paternity samples.
After feature extraction the chosen distance measure between the feature vectors of the example and each database sample is calculated.
