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Clinical Utility of Blood Biomarker Trajectories Study

Source: R/data.R
FNIHBC_BLOOD_BIOMARKER_TRAJECTORIES.Rd

Clinical Utility of Blood Biomarker Trajectories Study data. More information is available at https://adni.loni.usc.edu/data-samples/adni-data/

Usage

data(FNIHBC_BLOOD_BIOMARKER_TRAJECTORIES)

Format

A data frame with 24154 observations and 21 variables.

Source

https://adni.loni.usc.edu/data-samples/adni-data/

Details

  • ORIGPROT character Original study protocol , with options: ADNI1, ADNIGO, ADNI2, ADNI3

  • STUDY_ID character Assigned by ADNI Biomarker Core - FNIH BC ADNI 00002 , with options: FNIH BC ADNI 00002

  • SAMPLEID character Tube ID assigned by the ADNI Biomarker Core. This column used for participant unblinding. The endogenous QC samples confirmed to have low or high concentrations of p-tau217 are labled as EQC Low or EQC High.

  • PTID character

  • RID numeric Patient ID Range value: 21, ..., 6309

  • EXAMDATE Date when the sample was collected Date: YYY-MM-DD

  • VISCODE2 character Months from baseline rounded to nearest 6 months

  • ASSAYPLATFORM character Name of the assay platform utilized in the study , with options: Precivity, SIMOA, Lumipulse G1200, Elecsys

  • ASSAYVERSION character Version of assay used to perform the sample analysis

  • PERFORMINGLAB character Name of the laboratory performing the sample analysis , with options: C2N Diagnostics, QuanterixAcceleratorLab, IndianaUniversity_BAL, University of Gothenburg

  • INSTRUMENTID character Identification number assigned to the analyzer or instrument utilized to generate the study data , with options: LC-MS/MS, HDX-298, HDX-240, HDX-123, FL_1, HDX-297, HDX-214, HDX-411, HDX-230, Cobas 801 42E5-06

  • MATRIX character Sample or matrix type, K2 EDTA plasma for all core study samples , with options: K2 EDTA plasma

  • TESTNAME character Name of the analyte test/analysis

  • PLASMA_BIOMARKER character Description of assay developer, matrix, and analyte of biomarker measurement. This variable is intended to assist with data analyses.

  • TESTVALUE character Value generated by sample analysis. This should be the absolute quantification value, and if not, prior approval of methods and data to be presented are needed. If there are replicates, this should be the average concentration of the replicate results.

  • UNITS character Units of measure , with options: pg/mL, %, NG/ML, PG/ML

  • CV character Coefficient of variance if there are replicate measures per sample

  • RUN_NO numeric Analytical run, batch, or plate number Range value: 1, ..., 40

  • SEQUENCE_NO numeric Run order sequence number within an analytical run or over the course of the study if using the same instrument throughout Range value: 1, ..., 393

  • RUNDATE Date the sample analysis was performed Date: YYY-MM-DD

  • COMMENTS character Data annotations where applicable

Author

adni-data@googlegroups.com