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Table 3 Metadata SQL query results

From: Investigation into the annotation of protocol sequencing steps in the sequence read archive

Table

Field

Total records (in table)

Annotation record counts

   

Fragmentation

Adapter ligation

Enrichment

All steps

Study

study_abstract

29,598

376 (1.27%)

138 (0.47%)

941 (3.18%)

12 (0.04%)

Study

study_description

 

292 (0.98%)

136 (0.51%)

488 (1.65%)

53 (0.18%)

Sample

description

480,222

1,632 (0.34%)

896 (0.19%)

2159 (0.45%)

653 (0.14%)

Experiment

design_description

419,620

11,705 (2.79%)

6,382 (1.53%)

16,779 (4.00%)

2,691 (0.64%)

Experiment

library_selection

 

1,493 (0.36%)

0 (0%)

0 (0%)

0 (0%)

Experiment

library_construction_protocol

 

29,799 (7.10%)

24,486 (5.84%)

31,782 (7.57%)

17,021 (4.06%)

Experiment

experiment_attribute

 

422 (0.10%)

1,026 (0.24%)

2,814 (0.67%)

129 (0.03%)

  1. Each column (on the right side of the table dividing line) represents a sequencing step for which a word list is used to filter records where this step is annotated. Counts are the number of experiment records exhibiting this particular annotation. “All steps” indicates the number of fields containing all three types of protocol step annotation, i.e. they all have keywords from each of the keyword lists.