Table 2.

Time of data collection

		Treatment phase (weeks)								Follow-up phase (weeks)
Measures	Baseline	w 1	w 2	w 3	w 4	w 5	w 6	w 7	w 8	w 20	w 32
RMDQ	×				×				×	×	×
NRS	×	×	×	×	×	×	×	×	×	×	×
SPWT	×				×				×	×	×
SSSQ	×				×				×	×	×
Patient expectations	×

NRS, Number Rating Scale; RMDQ, Modified Roland-Morris Disability Questionnaire; SPWT, self-paced walking test; SSSQ, Swiss Spinal Stenosis Questionnaire; w, week.