Table 2 Overview of the main results of the multivariate analysis
Endpoint | Observations | Numeric rating scale | Roland–Morris questionnaire | Oswestry disability index | |||
|---|---|---|---|---|---|---|---|
r | P | r | P | r | P | ||
Follow-up (months) | 4910 | 0.22 | 0.1 | 0.01 | 0.9 | − 0.25 | 0.3 |
Age | 8830 | − 0.22 | 0.04 | − 0.01 | 0.9 | − 0.14 | 0.6 |
Female gender | 5125 | 0.09 | 0.5 | − 0.26 | 0.3 | − 0.45 | 0.09 |
BMI | 2701 | 0.01 | 0.9 | − 0.07 | 0.8 | 0.86 | 0.1 |
Symptoms duration (months) | 3452 | 0.08 | 0.6 | − 0.32 | 0.2 | − 0.26 | 0.7 |
Previous surgery | 180 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Comorbidities | 625 | 0.01 | 0.9 | Â | Â | Â | Â |
NRS baseline | 3943 | 0.26 | 0.03 | − 0.58 | 0.02 | 0.12 | 0.7 |
RMQ baseline | 2657 | 0.21 | 0.4 | 0.69 | 0.0001 | 0.60 | 0.4 |
ODI baseline | 1109 | 0.20 | 0.5 | 0.25 | 0.8 | 0.17 | 0.6 |