In 1988, the Kiger Mustang Association (now the Kiger Mesteño Association) was formed as the original registry for the herd.
Original registry membership limits resulted in many Colorado Ranger horses being registered instead as Appaloosas, but pedigree research is ongoing to discover additional horses who trace their ancestry back to the original stallions.
All drug name mappings were manually verified, and ∼5% of the mappings were corrected according to the original registry information.
We recorded whether results were provided for each of the primary outcomes detailed in the original registry.
Importantly, medication use at the time of the survey (that is, the clinic visit) was available for participants included in the validation sample, whereas such data were not available in the original registry survey based cluster sample.
By now (2008), new reports have shown that directional atherectomy, also performed with the "new" device, has no additional value to BA but moreover carries a high risk for peripheral embolization, which was not noted in the original registry [ 5– 7].
The original registry period was planned as 9 mo, but in order to avoid potential biases caused by uncertainty about the H1N1 vaccine in the public and also due to shortage of the pneumococcal vaccine, the Steering Committee decided to stop the registry after three months.
However, to allow direct follow-up comparisons to the data collected by mail at time 1 and to compare data collection modalities, 60% of those in our original registry cohort were randomly mailed a one-page questionnaire, comprising only symptom questions, 2 weeks before their telephone interview (Brewer et al. 2004).
To further investigate these findings, we performed a sensitivity analysis using the SEER 13 data set, which includes information from the nine original SEER registries as well as four additional registries between 1992 and 2008.
