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Use and misuse of random forest variable importance metrics in medicine: demonstrations through incident stroke prediction

Posted by szhivotovsky on January 18, 2024 in Guest Blogger

... to predict 5-year incident stroke and compare results based ... participants without history of stroke at the first visit ... indicating risk for incident stroke. What were the conclusions ...

Family history of stroke

fh_stroke under Family History in HCHS variables

This variable combines the self-reports of stroke for immediate family relatives, i.e. mother, father, and sibling(s).

Prevalent Stroke or TIA, self report

stroke_tia under Medical History in HCHS variables

This variable checks for medical history or mini-stroke or TIA.

Stroke: Self-reported year of diagnosis

stroke_year under Medical History in WSC variables

If yes, indicate how many years ago ____ or the year ____ you were diagnosed. (if stroke?="Y")

Stroke: Self-reported diagnosis by a physician

stroke_ynd under Medical History in WSC variables

The next section asks about specific medical problems. Please indicate if you have been told by a doctor that you have or have had any of these conditions: Stroke

Prevalent Stroke, self report

stroke under Medical History in HCHS variables

This variable checks for self-report medical history of stroke.

Prevalent Stroke, self-reported

stroke_sueno under Medical History in HCHS variables

Prevalent Stroke or TIA, self-reported

stroke_tia_sueno under Medical History in HCHS variables

Previous history of stroke

prev_hx_stroke under Medical History/SHHS1 in SHHS variables

Cerebrovascular Disease and Carotid Revascularization, self-reported at the Sueno clinic visit

cdcr_sueno under Clinical Data/Incident Outcomes in HCHS variables

This variable checks for medical history of stroke, mini-stroke or TIA, or balloon angioplasty or surgery to the arteries in the neck.

Cerebrovascular Disease and Carotid Revascularization, self-report

cdcr under Medical History in HCHS variables

This variable checks for medical history of stroke, mini-stroke or TIA, or balloon angioplasty or surgery to the arteries in the neck.

Days to First Stroke Since Baseline

stk_date under Clinical Data/Incident Outcomes/Cardiovascular Diseases in SHHS variables

Time since Sleep Heart Health Study Visit One (SHHS 1) Sleep Study to date of first stroke

Fatal Stroke Since Baseline?

stk_fatal under Clinical Data/Incident Outcomes/Cardiovascular Diseases in SHHS variables

Fatal stroke since baseline Polysomnogram (PSG) (as recorded in parent studies datasets)

Number of Strokes Since Baseline

stroke under Clinical Data/Incident Outcomes/Cardiovascular Diseases in SHHS variables

Stroke since baseline Polysomnogram (PSG) (as recorded in parent studies datasets)

04-dataset-introduction.md

Sleep Heart Health Study

... heart health outcomes (e.g. stroke, heart attack) between baseline ... surgical intervention > 3. Stroke > > Outcomes were ...

Age diagnosed: Stroke (CVA)

stroage under Medical History in CFS variables

Physician-diagnosed: Stroke (CVA)

strodiag under Medical History in CFS variables

Has a doctor or other health care provider ever told you that you had TIA, transient ischemic attack, or mini-stroke?

cvtia under Medical History in MROS variables

Are you currently being treated for TIA, transient ischemic attack, or mini-stroke by a doctor?

cvtiat under Medical History in MROS variables

Has a doctor or other health care provider ever told you that you had a stroke, blood clot in the brain or bleeding in the brain?

mhstrk under Medical History in MROS variables

Are you currently being treated for a stroke, blood clot in the brain or bleeding in the brain, by a doctor?

mhstrkt under Medical History in MROS variables

Diagnosed with stroke

dxstroke under Medical History in HOMEPAP variables

Any children have had stroke

shq_famchistroke under Medical History/Family History in BESTAIR variables

Any parents have had stroke

shq_famparstroke under Medical History/Family History in BESTAIR variables

Any siblings have had stroke

shq_famsibstroke under Medical History/Family History in BESTAIR variables