- Physical functioning limitations are based on Medical Outcomes Study Physical Functioning (MOS-PF) scores, categorised as no limitation (MOS-PF = 100), minor limitations (90 ≤ MOS-PF < 100), moderate limitations (60 ≤ MOS-PF < 90) and severe limitations (0 ≤ MOS-PF < 60)
- PFL Physical functioning limitations