Data-Driven PD Subtype Calculator — Disease-Duration Percentiles

Patient inputs

Years since PD diagnosis (integer 1–15; round down) MDS-UPDRS Part II total (0–52, patient-reported motor ADL)

052

MDS-UPDRS Part III off-medication total (0–132; or untreated visit)

0132

PIGD / TD ratio (Stebbins 2013; winsorized at 4.40)

04.4

RBDSQ-13 total (0–13; 13-item REM Sleep Behavior Disorder Screening Questionnaire)

013

SCOPA-AUT total (0–69; Scales for Outcomes in PD – Autonomic)

069

MoCA total (0–30; Montreal Cognitive Assessment, lower = worse)

030

Subtype

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Enter all values to compute

Motor composite (mean of 3 z-scores) —

Year-specific 75th-percentile threshold —

Above threshold (worst-motor)? —

Fereshtehnejad 2017 assignment rule (year-specific)

DM-PD = worst-motor AND ≥ 1 non-motor worst, OR all 3 non-motor worst

MMP-PD = not worst-motor AND 0 non-motor worst

IM-PD = everything else