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Table 2 Number of abstracts and sentences for Structured (S) and Unstructured (U) abstract sets, including number of sentences per class.

From: Automatic classification of sentences to support Evidence Based Medicine

 

All

S

U

# Abstracts

1000

376

624

# Sentences

10379

4774

5605

- Background

2557

669

1888

- Intervention

690

313

377

- Outcome

4523

2240

2283

- Population

812

369

443

- Study Design

233

149

84

- Other

1564

1034

530