Table 1.
Demographic for Patients Undergoing 1-Interbody or 2-Interbody Spinal Fusion.
| 1-Interbody, n (%) or Mean [SD] | 2-Interbody, n (%) or Mean [SD] | P | |
|---|---|---|---|
| Case year | |||
| 2012 | 14 (7.3) | 11 (4.7) | |
| 2013 | 43 (22.3) | 29 (12.3) | |
| 2014 | 47 (24.5) | 44 (18.7) | N/A |
| 2015 | 41 (21.4) | 55 (23.4) | |
| 2016 | 38 (19.8) | 94 (40.0) | |
| Age, y | 63.7 [11.2] | 60.2 [10.9] | .001 |
| Sex | |||
| % Female | 56.3 | 47.3 | .048 |
| Race | |||
| % Caucasian | 78.2 | 80.6 | .620 |
| BMI, kg/m2 | 30.1 [6.1] | 29.5 [5.9] | .363 |
| Smoking | |||
| %Nonsmoker | 79.7 | 89.3 | <.001 |
| %Former smoker | 4.4 | 10.7 | .016 |
| %Current smoker | 15.9 | 0.0 | .048 |
| CCI | 2.8 [1.7] | 0.533 [0.83] | <.001 |
Abbreviations: BMI, body mass index; CCI, Charlson Comorbidity Index; N/A, not applicable.