Comparison of clinical outcomes at different postoperative intervals.
| Comparison at 1 Mo | Nondiabetics (n = 30) | Diabetics (n = 30) | P a |
| VAS back pain | 1.1 ± 2.3 | 0.4 ± 1.2 | 0.142 |
| VAS leg pain | 1.2 ± 2.2 | 0.7 ± 2.0 | 0.301 |
| ODI | 30.4 ± 15.4 | 31.1 ± 16.6 | 0.871 |
| SF-36 PCS | 28.9 ± 9.7 | 32.5 ± 12.2 | 0.211 |
| SF-36 MCS | 50.9 ± 11.7 | 48.6 ± 12.8 | 0.479 |
| MCID attainment | |||
| SF-36 PCS (4.9) | 14 (46.7%) | 13 (43.3%) | 0.795 |
| ODI (12.8) | 19 (63.3%) | 18 (60.0%) | 0.791 |
| VAS back pain (1.2) | 24 (80.0%) | 26 (86.7%) | 0.488 |
| VAS leg pain (1.6) | 24 (80.0%) | 25 (83.3%) | 0.739 |
| Comparison at 3 Mo | Nondiabetics (n = 30) | Diabetics (n = 30) | P a |
| VAS back pain | 0.8 ± 2.4 | 1.0 ± 2.0 | 0.686 |
| VAS leg pain | 0.5 ± 1.9 | 1.0 ± 2.4 | 0.412 |
| ODI | 21.0 ± 18.2 | 23.8 ± 17.0 | 0.553 |
| SF-36 PCS | 44.3 ± 9.7 | 40.4 ± 11.5 | 0.168 |
| SF-36 MCS | 55.1 ± 8.3 | 53.9 ± 12.1 | 0.670 |
| MCID Attainment | |||
| SF-36 PCS (4.9) | 27 (90.0%) | 16 (53.3%) | 0.002 |
| ODI (12.8) | 27 (90.0%) | 20 (66.7%) | 0.028 |
| VAS back pain (1.2) | 25 (83.3%) | 24 (80.0%) | 0.739 |
| VAS leg pain (1.6) | 24 (80.0%) | 25 (83.3%) | 0.739 |
| Comparison at 6 Mo | Nondiabetics (n = 30) | Diabetics (n = 30) | P a |
| VAS back pain | 0.7 ± 1.8 | 1.1 ± 2.3 | 0.539 |
| VAS leg pain | 0.5 ± 1.4 | 1.1 ± 2.5 | 0.282 |
| ODI | 13.6 ± 14.5 | 19.0 ± 15.5 | 0.169 |
| SF-36 PCS | 45.9 ± 9.9 | 43.3 ± 11.1 | 0.348 |
| SF-36 MCS | 54.9 ± 9.1 | 52.0 ± 10.2 | 0.248 |
| MCID attainment | |||
| SF-36 PCS (4.9) | 26 (86.7%) | 20 (66.7%) | 0.067 |
| ODI (12.8) | 29 (96.7%) | 24 (80.0%) | 0.044 |
| VAS back pain (1.2) | 25 (83.3%) | 22 (73.3%) | 0.347 |
| VAS leg pain (1.6) | 26 (86.7%) | 23 (76.7%) | 0.317 |
| Comparison at 2 Y | Nondiabetics (n = 30) | Diabetics (n = 30) | P a |
| VAS back pain | 1.1 ± 2.5 | 0.8 ± 1.9 | 0.650 |
| VAS leg pain | 0.4 ± 1.7 | 0.8 ± 2.2 | 0.469 |
| ODI | 12.2 ± 17.9 | 15.1 ± 15.3 | 0.512 |
| SF-36 PCS | 45.7 ± 10.5 | 44.7 ± 10.9 | 0.704 |
| SF-36 MCS | 55.8 ± 10.7 | 50.5 ± 12.4 | 0.079 |
| MCID attainment | |||
| SF-36 PCS (4.9) | 25 (83.3%) | 22 (73.3%) | 0.347 |
| ODI (12.8) | 29 (96.7%) | 25 (83.3%) | 0.085 |
| VAS back pain (1.2) | 25 (83.3%) | 27 (90.0%) | 0.448 |
| VAS leg pain (1.6) | 25 (83.3%) | 25 (83.3%) | 1.000 |
Abbreviations: MCID, minimal clinically important difference; MCS, mental component score; ODI, Oswestry Disability Index; PCS, physical component score; VAS, visual analog scale.
Note: Data presented as n (%) or mean ± SD. Boldface values indicate statistical significance (P < 0.05).
↵a P value was calculated for each category using χ2 analysis (categorical) or student’s t test (continuous).