Calculators

Common tools

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PLMS Index

Periodic limb movements during sleep and their qualifying arousal-associated subset per hour of sleep.

Eligible individual PLMS(count)Required — enter a known zero explicitly where applicable.PLMS associated with qualifying arousals(count)Required — enter a known zero explicitly where applicable.

Total sleep time(minutes)Required — enter a known zero explicitly where applicable.

Result

Complete or correct the marked inputs to calculate. Blank values are not zero.

PLMS Index = eligible individual PLMS × 60 / TST minutes

PLMS-Arousal Index = arousal-associated PLMS × 60 / TST minutes

Full precision is used internally. Only displayed results are rounded, normally to one decimal place.

For training use. Follow your lab’s scoring rules and physician interpretation. Calculations use already-scored measurements, stay on this device, and do not diagnose or recommend treatment. Do not enter patient identifiers.