Table 1.

Set of 11 items obtained through panel feedback and consensus agreement

Intermitent pain during day	Pain on trunk flexion
Morning pain on waking and initial getting up	Pain on lateral bending
Stiffness after resting	Palpatory pain of vertebrae
Pain on repetive bending	Pain when standing for a while
Palpatory pain of muscles	Pain on trunk extension
Pain getting out of a chair