Table 5. Comparison between infants colonized by ST22-MRSA-IVa and those colonized by other genotypes, June 2009–June 2012, Palermo, Italy.
| Variable | Infants with ST22-MRSA-IVacolonization (n = 166) | Infants with other MRSAclones colonization (n = 21) | P |
| At admission | |||
| Male gender, n (%) | 79 (47.6) | 9 (42.9) | 0.35 |
| Twin birth, n (%) | 28 (17.7) | 3 (14.3) | 0.37 |
| Malformation, n (%) | 98 (18.3) | 40 (21.4) | 0.18 |
| Inborn, n (%) | 35 (21.5) | 5 (25.0) | 0.35 |
| Birth through vaginal delivery, n (%) | 45/27.8) | 7 (33.3) | 0.30 |
| Admission to NICU ≥24 h after birth, n (%) | 11 (6.6) | 5 (23.8) | 0.02 |
| Apgar score at 5 min ≥8, n (%) | 146 (90.1) | 17 (81.0) | 0.18 |
| Gestational age, mean (SD), wk | 36.6 (3.3) | 34.1 (4.1) | 0.001 |
| Birth weight, mean (SD), g | 2604 (846) | 2284 (996) | 0.11 |
| During stay | |||
| Surgical procedure, n (%) | 5 (3.1) | 3 (15.0) | 0.04 |
| Central venous access device, n (%) | 39 (23.5) | 12 (57.1) | 0.001 |
| Endotracheal tube, n (%) | 29 (17.5) | 8 (38.1) | 0.03 |
| Nasogastric tube, n (%) | 60 (36.1) | 11 (52.4) | 0.08 |
| nCPAP, n (%) | 29 (17.5) | 10 (47.6) | 0.003 |
| Parenteral nutrition, n (%) | 64 (38.6) | 16 (76.2) | <0.001 |
| Length of stay, mean (SD), d | 24.6 (31.1) | 30.8 (28.9) | 0.38 |
| Ampicillin-sulbactam plus gentamicin, n (%) | 61 (36.7) | 12 (57.1) | 0.05 |
| Ampicillin-sulbactam plus gentamicin, mean (SD), d | 4.0 (7.0) | 7.8 (9.1) | 0.03 |
| Systemic antibacterial therapy, n (%) | 69 (41.6) | 14 (66.7) | 0.02 |
| Systemic antibacterial therapy, mean (SD), d | 6.3 (13.0) | 14.0 (20.7) | 0.02 |
SD, standard deviation; nCPAP, nasal continuous positive airway pressure.