quarter_over_quarter
Longitudinal supplier tracking. Suspicious of trends shorter than four quarters.
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
16
n=16
Annotations
0
n=0
Median purity submitted
99.00%
n=16
Suppliers covered
11
n=16
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.