Grip strength and waist circumference resolved against a single sex-aware
bracket for every adult age. Replace each with age x sex norm bands:
- Grip strength: age x sex bands from Dodds et al. 2014 (PLOS ONE
9(12):e113637) British normative data — band low is the 10th centile
floored at the EWGSOP2 probable-sarcopenia cut-off (men 27 kg, women
16 kg), band high is the 50th-centile median. Strength peaks in the 30s
and declines from midlife, so the bands step down with age.
- Waist circumference: WHO increased-risk threshold (men 94 cm, women
80 cm) held flat through midlife and raised for older adults toward the
WHO substantially-increased-risk line, since the WHO cut-points derive
from cohorts aged 20-74. The standard threshold is never lowered.
The norms resolver gains an age-independent clinical cut-off row per sex,
used only as the no-age fallback so a profile with a known sex but no date
of birth keeps the sex cut-off rather than the coarse registry anchor. The
signal registry structure is unchanged — only the resolver tables move.
Marc-André Bombeck
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