Demographics and index surgery
| OC group (n=46) | PMC group (n=40) | P value | |
| Age (years)* | 12.4±2.46 | 12.2±2.8 | 0.711 |
| Gender, n (%) | 1.00 | ||
| Male | 19 (41) | 17 (43) | |
| Female | 27 (59) | 23 (57) | |
| Race, n (%) | 0.298 | ||
| White | 18 (39) | 23 (58) | |
| Hispanic/Latino | 16 (35) | 10 (25) | |
| Black | 8 (17) | 6 (15) | |
| Asian | 4 (9) | 1 (2) | |
| BMI* | 21.2±5.7 | 19.9±5.0 | 0.263 |
| Primary diagnosis, n (%) | 0.235 | ||
| Cerebral palsy | 28 (61) | 19 (48) | |
| Other† | 14 (30) | 11 (28) | |
| Muscular dystrophy | 2 (4) | 5 (12) | |
| SMA | 2 (4) | 5 (12) | |
| OR time (hours)* | 6.7±1.2 | 7.3±1.3 | 0.016 |
| Spinal levels fused* | 15.5±1.4 | 15.1±2.5 | 0.309 |
| Estimated blood loss (mL)* | 864±547 | 710.5±645.4 | 0.237 |
| pRBC transfused (mL)* | 342±318 | 258.5±428.3 | 0.301 |
| Cell saver (mL)* | 311±240 | 256.9±296.3 | 0.359 |
| LOS (days)* | 9.8±10.1 | 10.7±9.3 | 0.687 |
P values in bold indicate significant results.
*Data were presented with mean±SD.
† Other primary diagnoses (pooled) included spina bifida (n=4), congenital myopathy (n=3), trisomy 18 (n=2), congenital hypotonia (n=2), chromosome 1 deletion syndrome (n=1), MECP2 duplication syndrome (n=1), arthrogryposis multiplex congenita (n=1), neurofibromatosis type 1 (n=1), Pallister-Killian Syndrome (n=1), type 1 cerebellar ataxia (n=1), partial trisomy 1 (n=1), Wolf-Hirschhorn syndrome, non-specific paraplegia (n=1), hypomyelinating leukodystrophy type 6 (n=1), McCune-Albright syndrome (n=1) and congenital hydrocephalus (n=1).
BMI, body mass index; LOS, length of stay; OC, orthopedic closure; OR, operating room; PMC, plastic multilayered closure; pRBC, packed red blood cells; SD, standard deviation; SMA, spinal muscular atrophy.