Table 4.
Multivariate analysis for length of surgery.
| Β (mins) | p-value | 95% Confidence Interval |
||
|---|---|---|---|---|
| Lower Limit | Upper Limit | |||
| MISS, ref. = open | −45.69 | <0.001* | −63.03 | −28.36 |
| Surgeon experience, ref. = <10 yrs | −69.18 | <0.001* | 95.09 | −43.27 |
| Multiple fractures, ref. = 1 fracture | 32.33 | 0.002* | 12.48 | 52.19 |
| Segment length, ref. = short segment | 21.60 | 0.012* | 4.71 | 38.50 |
The beta coefficient (β) is given in minutes (mins). MISS indicates minimally invasive spine surgery. *Statistical significance was determined with a p-value less than 0.05.