Intensity is captured on the 0–10 Numeric Rating Scale (NRS). The
Joint Commission's pain-assessment standard (PC.01.02.07) requires
routine screening; NRS is the de-facto US default. Anchors:
0 = no pain, 10 = worst pain imaginable.
Each entry is banded for visual context (pragmatic clinical
convention — Hjermstad et al., J Pain Symptom Manage, 2011):
- None: 0
- Mild: 1–3
- Moderate: 4–6
- Severe: 7–10
The 7-day average is the arithmetic mean of intensities from the
trailing 7 calendar days (inclusive of today, local time), rounded
to one decimal. The frequency tally counts symptoms over the same
window; free-text symptoms are case-folded and trimmed before
bucketing.