How correlations work

Tended compares your flare days (rating 1-2) against your other days. If something appears far more often on bad days, that’s a signal worth noticing.

Early signals

With less than 30 days of data, correlations are labelled as early signals. They show genuine patterns in your data, but small sample sizes mean some may not hold up over time. As you keep logging, unreliable signals fade and the meaningful ones grow stronger. After 30 days, the label changes to Correlations.

When a pattern is not right for you

Open the pattern and choose Hide this pattern. Pick a reason and, if useful, add your own explanation such as another event that better explains the timing. Hidden patterns stay in your journal but stop appearing in What affects you. You can review the reason and note under Hidden patterns, then restore the pattern at any time.

What Tended checks

Triggers, food and drink, medications, relief methods, activities, mood labels, weather conditions (including pressure change rate), period days, energy, sleep, bowel, body regions, symptom details, custom fields, and Apple Health metrics are analysed where they are relevant. Medication analysis can use the medication name, dose, quantity, and dose time where that detail is available. Tended also shows which time window produces the strongest observed association for each category. More consistent logging gives the comparison more of your records to work with, but it does not establish cause and effect.

Medication view

Medication insights use a focused view by default. Long-term scheduled medications that look stable are treated as part of your baseline, so PRN, skipped, tapering, dose-specific, and stronger medication signals are easier to see. In chart views, use Focused meds or All meds to decide whether baseline medications stay quiet or return to the list. Flow views keep medication signals focused and use their own All, Triggers, Food, Meds, and Weather filters.

Relief Methods

Relief methods are non-medication things you try for comfort, symptom relief, or recovery, such as heat, ice, pacing, rest, breathing, hydration, or a dark room. Logging them lets Insights compare whether those methods tend to appear on easier days, harder days, symptom days, activity days, or recovery windows.

Major Events

Major Events are used as context, not as ordinary correlation factors. They can appear as markers on charts or in dedicated Major Events insight analysis, but they are not ranked beside triggers, foods, medications, or weather in “What affects you.”

Energy

Shows which factors drain or boost your energy levels.

Sleep

Shows what disrupts or improves how well you sleep.

Bowel

Shows what disrupts or stabilises your digestion — using the Bristol Stool Scale, it measures how far your bowel type deviates from normal (types 3–4).

Symptoms

Pick a specific symptom and see which factors correlate with higher or lower severity.

“May be making things worse” and “May be helping”

Factors that appear more on flare days show under “May be making things worse.” Factors that appear more on good days (rating 4-5) show under “May be helping.”