Prevalence rate of sleep disorder (SD) terms in the journal articles during 2000–2013.

<p>Prevalence rate of sleep disorder (SD) terms in the journal articles during 2000–2013.</p

Average linkage hierarchical cluster analyses of research methodology terms used in relation to each SD term in the journal articles from 2000 to 2013.

<p>Average linkage hierarchical cluster analyses of research methodology terms used in relation to each SD term in the journal articles from 2000 to 2013.</p

Distribution of SD and methodology terms (number of journal articles) from 2000 to 2013 (n = 3,720).

<p>Distribution of SD and methodology terms (number of journal articles) from 2000 to 2013 (n = 3,720).</p

Adjusted logistic regression models for SD and research methodology terms in the journal articles from 2000 to 2013.

<p>Adjusted logistic regression models for SD and research methodology terms in the journal articles from 2000 to 2013.</p

Positives and negatives of MetaMap mappings in 42 sample journal articles (n = 714).

<p>Positives and negatives of MetaMap mappings in 42 sample journal articles (n = 714).</p

Adjusted odds ratios (AORs) and 95% confidence intervals (CI) of clinical statuses associated with genotypic frequencies of <i>SERPINB5</i> in oral cancer patients (<i>n</i> = 741).

<p>Adjusted odds ratios (AORs) and 95% confidence intervals (CI) of clinical statuses associated with genotypic frequencies of <i>SERPINB5</i> in oral cancer patients (<i>n</i> = 741).</p

Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of oral cancer associated with genotypic frequencies of <i>SERPINB5</i> among individuals exposed to relevant environmental risk factors.

<p>Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of oral cancer associated with genotypic frequencies of <i>SERPINB5</i> among individuals exposed to relevant environmental risk factors.</p

Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of oral cancer associated with genotypic frequencies of <i>SERPINB5</i>.

<p>Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of oral cancer associated with genotypic frequencies of <i>SERPINB5</i>.</p