Research Paper Data Extractor

Extract selected research-paper fields into a table with exact evidence quotations, source locations and uncertainty states. Review every finding before reuse.

How to use Research Paper Data Extractor

Paste or upload an authorized readable paper and inspect its identity and coverage.
Review parsed text and coverage. Select extraction fields; inferred limitations are optional and off by default.
Process the paper, then compare generated information with every exact quotation and source location.
Copy or download the reviewed result before leaving the page.

Build an extraction record you can audit

A paper extraction table is a record of what a particular document reports. It helps you collect consistent information without treating a generated answer as the primary source. Choose the fields that matter to your review question: limitations, methods, sample and population, effect sizes, outcomes, datasets used, funding and conflicts of interest. Each row separates extracted information from the exact evidence used to support it. A location and an uncertainty state make it easier to revisit a decision when another reviewer disagrees.

Decide what each field means in your own protocol before processing several papers. For example, sample size may mean the number recruited, randomized, followed up or included in an analysis. Those numbers can all be correct while answering different questions. Likewise, an outcome is not automatically the measurement instrument, analysis metric or assessment timepoint. Keep the reported context when you move a finding into a review spreadsheet. The extractor does not impose your eligibility criteria or resolve conflicting definitions across studies.

Found means the model proposed information accompanied by at least one quotation that occurs in the parsed document. Missing means the selected information was not located in that supplied text. Ambiguous covers uncertain descriptions and findings that lost their evidence during verification. These are aids to navigation, not quality ratings. A paper can report a flawed method clearly, and a sound study can be described incompletely. Use a separate appropriate appraisal process for study validity and reporting completeness.

Preserve the relationship between a value and its evidence

The model proposes quotations, and deterministic processing checks them against the parsed text after normalizing whitespace and typographic quotation marks. A quotation that cannot be matched is removed. If any proposed quotation is lost, or prose introduces an unsupported quantity, unit, direction or timing term, the row becomes ambiguous and its prose is labelled unsupported by a located span. This prevents fabricated quotations from appearing as documentary support, but it does not prove that a genuine quotation entails the generated interpretation. Always read the surrounding passage.

Effect sizes are retained as reported text. The tool does not calculate a standardized difference, combine groups, reconstruct a confidence interval, derive a standard error or convert an odds ratio into a risk ratio. Preserve the measure, comparison, direction, units, adjustment and timepoint when copying an estimate. If a table loses its column relationships during PDF extraction, a number can remain readable while its meaning becomes uncertain. Open the original table and verify it before entering quantitative data into a synthesis.

Funding and conflicts of interest are disclosures made in the document. An explicit statement of no external funding differs from a funding section that was not supplied. A declaration of no competing interests is not independent verification that none exist. The extraction should retain the actual declaration and its source location without inferring motives, sponsor influence or undisclosed relationships. If the statement refers to an external form or supplement, consult that material separately before finalizing your record.

Check document coverage before using the table

Pasted text and uploads may contain an excerpt rather than the complete paper. PDF extraction preserves PDF page markers; these are file page numbers, not automatically the numbers printed by the journal. JATS XML uses section and paragraph references and reports that pages are unavailable. Scanned PDFs need an external OCR step, which this tool does not provide. Encrypted or corrupt files require an authorized unlocked or repaired copy. Missing text-layer pages are reported as partial coverage rather than treated as empty scientific content.

The processing limit is 150,000 characters. If the extracted document is longer, the covered portion is explicitly identified and only that portion is sent for processing. Do not read a missing finding as evidence that the full paper omitted it. Inspect coverage, tables and the displayed text before submitting. Upload or paste the full paper you are authorized to process. An abstract alone cannot support full-text extraction.

Copy the table or download the CSV after checking the evidence. Keep a link to the original paper and your reviewer decisions alongside the exported values. Two distinct papers share one allowance across all extraction presets and the summarizer; a successfully processed paper can be revisited without using another paper. Results remain in this tab and are not transferred when signup opens AnswerThis. Download the record before leaving, and follow your own review protocol for reconciliation and version control.

Supplied documents and processing

Upload or paste a paper you are authorized to process, then inspect its parsed text and coverage. Only supplied text is processed; this tool does not retrieve articles. Publication version and licence are not independently verified. Reports include the processing time, source description and coverage.

Paper text is sent to our backend and OpenAI. This application does not store paper text or results; only allowance identifiers persist. Provider retention terms apply. See OpenAI data controls and retention. Copy or download your reviewed result before closing the tab.

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Frequently asked questions

What is in the extraction record?

Select any of eight fields: limitations, methods, sample and population, effect sizes, outcomes, datasets used, funding and conflicts of interest. Each record has prose, exact quotations, locations and a found, missing or ambiguous state. CSV includes the same review context, provenance and coverage.

Can a research question support a positive outcome?

No. “We investigated whether walking improved sleep” does not establish “Walking improved sleep.” A question-only quotation cannot support a result; the claim becomes ambiguous. Review the actual results and preserve their direction, timing and units.

How should I review the CSV?

Check each claim against its quotation and original location. Resolve ambiguous entries, keep missing entries distinct from negative findings, and retain provenance and coverage columns when combining records. Effect sizes are reported text, not new calculations.

Which files and page references are supported?

Upload text-layer PDF, TXT, Markdown or JATS XML up to 25 MB. OCR is not supported. Encrypted, corrupt and scanned files need a readable replacement. PDF page numbers are separate from printed labels; JATS uses section/paragraph references with pages unavailable. Coverage is explicit, including the 150,000-character limit.

Which paper text should I supply?

Upload or paste an authorized readable paper including the sections you want processed. Check the title, body and supplements before generating. An abstract alone is not the full paper. Only supplied text is processed; the tool does not retrieve papers or bypass access restrictions.

How does the 2 papers allowance work?

This tool includes 2 papers per browser, shared across extraction presets and the summarizer. A distinct document hash counts once after successful processing. Re-running the same paper is free. Confirmed processing failures are refunded; a lost response or browser storage failure leaves allowance status uncertain. Copying or downloading an existing result is free.

Does signup save the paper or unlock more runs here?

Signup opens the AnswerThis app. It does not unlock more runs on this page or transfer your draft. Copy or download your result first. This application does not store paper text or results; only allowance identifiers persist. Paper text goes to our backend and OpenAI; provider retention terms apply.