NATURAL HISTORY & STATE TRANSITIONS

Baseline, context & change

Define usual function, record the context around a change, and distinguish continued acquisition, variable access, events, and acquired loss.

TRACK THE SAME OUTCOME OVER TIME

Start with the fillable Function & State Tracker.

Define baseline, the active context, the exact change, measurement, action, and recovery before reconstructing the timeline later.

WHAT TO RECORD AROUND A CHANGE

Six linked observations turn a reported change into a history that can be compared over time.

Past records and observations can identify a possible change window. A prospective study should repeat the same measure across baseline, change, and recovery whenever clinically appropriate.

  1. 01

    Baseline

    Usual function, active diagnoses, supports, and recent stability before the change.

  2. 02

    Context around the change

    Illness, sleep, pain, bowel state, meals, fasting or low intake, hormones, medication, procedure, environment, or no clear context identified.

  3. 03

    Observed change

    What became newly present, newly absent, less reliable, or measurably different from the person’s own baseline.

  4. 04

    Measurement

    The examination, record, EEG, laboratory, imaging, school, therapy, or functional measure capable of answering the question.

  5. 05

    Action

    Treatment, support, exposure removal, rehabilitation, watchful follow-up, or no intervention recorded.

  6. 06

    Outcome

    Complete, partial, delayed, recurrent, unresolved, persistent, or a new baseline.

Interpretive rule

Timing supports a hypothesis; it does not by itself establish the trigger, mechanism, efficacy, or adverse effect.

WAYS A COURSE CAN CHANGE

Capacity, reliable access, events, loss, and recovery are different outcomes.

These are possible patterns over time. They do not estimate how often a pattern occurs or show that every course shares one ASH1L cause.

01

Continued acquisition

Skills continue to emerge. Ongoing support need does not equal regression.

02

Plateau

Progress slows or pauses without documented loss of a previously demonstrated ability.

03

Variable access

A demonstrated ability becomes inconsistent across state or setting, then may return.

04

Episodic change

A discrete event has a recognizable onset and offset and requires event-level differential assessment.

05

Acquired loss

A previously demonstrated ability is no longer available beyond the immediate state window.

06

New baseline

Recovery is incomplete or a different stable level of function remains after the event.

ABILITY × ACCESS

A skill can be present but not reliably available.

Before calling a change regression, document whether the ability reappears with cueing, rest, pain relief, seizure control, bowel relief, communication support, a familiar context, or resolution of another physiological stressor or condition. Reappearance does not make the event unimportant; it changes the question being asked.

Ability × access × state →