shifting-clinical-dates SKILL.md skillA
shifting-clinical-dates from maziyarpanahi/openmed is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add maziyarpanahi/openmed/shifting-clinical-dates@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- maziyarpanahi/openmed
- Path
skills/shifting-clinical-dates/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0, committed Jul 20, 2026
- Size
- 6,668 bytes
- Repository stars
- 5,784
- License
- Apache-2.0
Apply consistent per-patient date shifting in OpenMed that preserves intervals between events while satisfying HIPAA Safe Harbor's date rule. Use when the user needs to de-identify dates but keep temporal structure for research, shift all dates by the same offset per patient, preserve days-between-events for survival or longitudinal analysis, cap ages over 89, or strip everything but the year. Covers deidentify(method="shift_dates", date_shift_days=..., keep_year=...) and per-patient…
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What the file says
# Shifting clinical dates
HIPAA Safe Harbor forbids keeping dates more specific than the year. But naively
deleting dates destroys the temporal structure research depends on — time to
event, length of stay, intervals between visits. **Date shifting** is the
compromise: move every date by a single random offset so the *absolute* dates
become meaningless while the *intervals* between them are preserved exactly.
OpenMed does this on-device with `deidentify(method="shift_dates", ...)`.
## When to use this skill
Use it when downstream analysis needs temporal relationships (survival curves,
sepsis-to-antibiotic time, readmission gaps) but the calendar dates must be
de-identified. If you can throw dates away entirely, plain `method="mask"` is
simpler — reach for shifting only when intervals matter.
## Quick start
```python
import openmed
note = (
"Admitted 2024-03-02, started antibiotics 2024-03-04, discharged 2024-03-09. "
"Follow-up scheduled 2024-04-02."
)
# Shift every date by the SAME offset -> intervals preserved, dates obscured.
result = openmed.deidentify(
note,
method="shift_dates",
consistent=True, # one stable offset for this run
…Read the whole file at its exact version.
How to install
mdr add maziyarpanahi/openmed/shifting-clinical-dates@sha256:3dcd6e733a101305The line at the top of this page pins the label v1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_pzdssraauzxbjoha)
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Versions
The registry has recorded 1 version of this file, committed on Jul 20, 2026.
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Source
maziyarpanahi/openmed · 5,784 stars · license Apache-2.0 · pushed 2026-11-07 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_pzdssraauzxbjoha GET https://markdownregistry.com/api/v1/resolve?ref=maziyarpanahi/openmed/shifting-clinical-dates GET https://markdownregistry.com/api/v1/blob/3dcd6e733a10130547ebcd04593838eafe374a0a8c540d4d2ab9deb531a3ae6d
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