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Table 1 Timeline of outcome assessment

From: Does walking after lumbar spinal surgery predict recovery of function at six months? Protocol for a prospective cohort study

Pre-operative (baseline)

 Baseline demographics:

Age, sex, smoking status, height, weight, diabetic history

 History of back/leg symptoms:

Duration of symptoms, neurological deficit

 Physical function:

ODQ, SF-36

 Pain:

Back and leg pain (NRPS)

 Physical activity:

IPAQ-SF

 Psychological status:

Depression (PHQ-9), anxiety (GAD-7)

Post-operative (days 1–7):

 Surgical procedure:

Decompression, discectomy, fusion; single or multi-level

 Accelerometry:

Time spent walking, step count, time spent in sedentary and active postures, number of walks

 Pain:

Back, leg and wound pain (NRPS)

 Supervised walking:

Patient/physiotherapist reported

 Post-operative complications:

Complications requiring medical intervention and/or limit walking time

Post-operative (6 months):

 Physical function:

ODQ, SF-36

 Patient satisfaction:

5 point likert scale

 Post-operative complications:

Complications requiring medical intervention