Epidemiology Tools
Browse all available epidemiology tools.
Available tools
- Case Component Match Count Tool Count explicit known case-component matches without determining a clinical case definition.
- Case Definition Component Flag Tool Evaluate supplied research classification component flags under explicit all/any logic, preserving unresolved components; no diagnosis or case definition is selected.
- Case Definition Revision Onset Boundary Tool Choose an explicitly supplied case-definition revision side by onset date and boundary-equality policy without determining case status.
- Case Definition Version Match Pair Tool Calculate case definition version match pair from explicit caller-supplied inputs.
- Case Link Evidence Source Label Tool Record an ordered supplied case-pair evidence source without establishing epidemiological linkage.
- Case Source Precision Gap Tool Calculate case source precision gap from explicit caller-supplied inputs.
- Cohort Event Exposure Fraction Tool Divide explicitly counted distinct persons with an event by exposed persons; not a recurrent-event incidence rate.
- Contact Risk Window Overlap Duration Term Tool Duration overlap of half-open contact and caller-supplied risk intervals, without assigning infection risk.
- Crude Rate Standard Population Factor Tool Calculate crude rate standard population factor from explicit caller-supplied inputs.
- Direct Standardization One Stratum Term Tool One directly standardized rate contribution; weights across all strata must sum to one externally.
- Epidemic Curve Bin Date Assign a date to an explicitly anchored fixed-day epidemic-curve bin using floor and a half-open bin convention.
- Epidemic Week Explicit Origin Offset Tool Zero-based weeks relative to an explicit origin, not an ISO, CDC or jurisdictional epidemiologic week calendar.
- Exposure Onset Order Flag Compare explicitly supplied exposure and onset times on one timeline without inferring causation.
- Exposure Window Left Truncation Days Tool Split a supplied half-open exposure window at observation entry without inferring exposure or incidence.
- Exposure Window Overlap Single Event Tool Check a supplied event timestamp against explicit exposure bounds and endpoint policy without inferring transmission or causation.
- Follow Up Exposure Censoring End Choose a supplied censoring or planned follow-up endpoint without inferring censoring status.
- Generation Interval Explicit Anchor Pair Tool Infection-time generation interval with conservative endpoint uncertainty propagation; a negative lower interval flags overlapping uncertainty.
- Incidence Density Exposure Day Factor Tool Incidence density from explicitly supplied person-time; no assumption that events equal affected people.
- Indirect Standardization One Expected Count Tool One expected-count stratum and its observed/expected ratio; aggregate SMR requires sums across all strata.
- Infection Test Left Censor Interval Token Tool Preserve explicitly supplied infection-test timing bounds and censoring code without imputing infection time.
- Onset Date Partial Interval Width Tool Width of a supplied partial onset-date interval under an explicit inclusive-day convention.
- Outbreak Case Onset Day Index Tool Signed outbreak day index on a caller-defined absolute-day axis; one-based numbering is optional.
- Outbreak Household Member Index Qualify an explicit household-member ordinal under a supplied zero- or one-based indexing convention.
- Outbreak Line List Onset Precision Tool Preserve supplied onset transcription and precision in an outbreak line list without constructing an exact date.
- Person Time Entry Exit Overlap Tool Calculate supplied person-risk interval overlap with a half-open observation window without determining disease-free eligibility.
- Person Time Risk Support Share Tool Calculate person time risk support share from explicit caller-supplied inputs.
- Population Attributable One Exposure Term Tool Levin population attributable fraction under a single binary exposure and an applicable causal relative risk supplied externally.
- Prevalence Incidence Duration Residual Tool Compare prevalence against the rare-disease stationary approximation P≈I*D; outputs are not a prevalence estimate outside those assumptions.
- Recurrent Episode Washout Gap Tool Compare an explicit interepisode time gap with a supplied inclusive washout duration without defining recurrent disease episodes.
- Reinfection Washout Caller Gap Tool Apply a caller-supplied episode-spacing rule; no pathogen-specific reinfection definition is inferred.
- Repeat Test Person Denominator Count unique explicitly identified persons among included tests while reporting repeat tests separately.
- Research Contact Date Redaction Shift Tool Shift a supplied research contact date by explicit signed UTC calendar days without claiming complete deidentification.
- Risk Window Halfopen Boundary Tool Membership in a supplied half-open research risk window, without estimating individual medical risk.
- Risk Window Left Entry Offset Tool Locate supplied left entry on a half-open risk window without imputing events.
- Screening Positive Yield Denominator Choice Tool Calculate screening positive yield denominator choice from explicit caller-supplied inputs.
- Secondary Attack Rate Index Exclusion Tool Index cases and immune exclusions are disjoint; secondary cases are among remaining susceptible contacts.
- Sentinel Report Missing Week Mask Tool Exact caller-defined week identifier audit; reporting completeness does not imply zero cases or surveillance sensitivity.
- Sentinel Site Reporting Exposure Hours Tool Subtract supplied missing-report hours from scheduled sentinel reporting duration without estimating disease occurrence.
- Serosurvey Indeterminate Code Identify literal caller-supplied indeterminate and missing serosurvey codes without interpreting an assay.
- Surveillance Case Definition Label Attach an explicit surveillance definition source and version without classifying a case.
- Surveillance Nonreporting Base Flag Tool Calculate surveillance nonreporting base flag from explicit caller-supplied inputs.
- Surveillance Reporting Delay One Case Tool Correct a pair of local-clock epoch-like timestamps by subtracting report-minus-onset UTC-offset difference; negative delays remain audit-visible.
- Surveillance Week Origin Gap Tool Calculate surveillance week origin gap from explicit caller-supplied inputs.
- Surveillance Week Partial Day Denominator Tool Combine explicit complete surveillance days with a partial day on a supplied hours-per-day basis without assigning calendar weeks.
- Test Positivity Repeated Person Exclusion Tool Explicit test-level or ordered person-level positivity policy; array order defines the first test.
- Vaccination Coverage Known Status Base Tool Descriptive coverage with known-status and all-record denominators; not adjusted for missingness or vaccine schedule completeness.
- Vaccination Dose Sequence Label Format a supplied vaccination dose ordinal and product wording without validating a schedule.