Table 2.
Comparison between study periods.
| Variable | Period 1 n = 209 |
Period 2 n = 133 |
Period 3 n = 132 |
P - Value |
|---|---|---|---|---|
| Procedures per day, median (IQR) | 7 (4–13) | 5 (3–6) | 5 (4–7) | 0.1 |
| Institution type | ||||
| Public, n (%) | 141 (67.5) | 90 (67.7) | 101 (76.5) | 0.16 |
| Private, n (%) | 68 (32.5) | 43 (32.3) | 31 (23.5) | |
| Diagnosis category | ||||
| Trauma, n (%) | 19 (9.1) | 16 (12) | 7 (5.3) | 0.15 |
| Oncology, n (%) | 53 (25.4) | 39 (29.3) | 37 (28) | 0.7 |
| Spine, n (%) | 41 (19.6) | 24 (18.1) | 24 (18.2) | 0.92 |
| Vascular, n (%) | 35 (16.8) | 16 (12) | 32 (24.2) | 0.03 |
| Congenital, n (%) | 11 (5.3) | 5 (3.8) | 3 (2.3) | 0.39 |
| Hydrocephalus, n (%) | 22 (10.53) | 24 (18.1) | 19 (14.4) | 0.14 |
| Peripheral Nerve, n (%) | 10 (4.8) | 1 (0.7) | 1 (0.7) | 0.02 |
| Functional, n (%) | 5 (2.4) | 0 | 1 (0.76) | 0.13 |
| Infections, n (%) | 13 (6.2) | 8 (6) | 8 (6) | 0.99 |
| Priority of the case | ||||
| Priority 1 (Immediate), n (%) | 31 (14.8) | 32 (24.1) | 26 (19.7) | 0.09 |
| Priority 1 (1−24 h), n (%) | 29 (13.9) | 30 (22.6) | 30 (22.7) | 0.05 |
| Priority 2 (1−7 d), n (%) | 62 (29.7) | 40 (30.1) | 44 (33.3) | 0.76 |
| Priority 3 (1−4 w), n (%) | 38 (18.2) | 18 (13.5) | 20 (15.2) | 0.5 |
| Priority 4 (>4 w), n (%) | 49 (23.4) | 13 (9.8) | 12 (9.1) | <0.001 |
| Complication | ||||
| General, n (%) | 8 (3.8) | 5 (3.8) | 4 (3) | 0.92 |
| Craniospinal, n (%) | 21 (10.1) | 15 (11.3) | 9 (6.8) | 0.43 |
| Length of hospital stay, median (IQR) | 7 (4–18) | 6 (3–13) | 5 (2–8) | 0.02 |
| 30-day mortality, n (%) | 2 (1) | 4 (3) | 2 (1.5) | 0.35 |
IQR: interquartile range; n: number.