PMC:4144696 / 6744-6897
Annnotations
{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4144696","sourcedb":"PMC","sourceid":"4144696","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4144696","text":"We estimated a total sample size of 2,100, assuming a headache prevalence ≥10% and an absolute margin of error of 1.3% with 95% confidence interval [13].","tracks":[{"project":"2_test","denotations":[{"id":"25146939-24467862-60562896","span":{"begin":149,"end":151},"obj":"24467862"}],"attributes":[{"subj":"25146939-24467862-60562896","pred":"source","obj":"2_test"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"2_test","color":"#ecd293","default":true}]}]}}