Table 1.
Multivariate analysis of influencing factors among neonates with Staphylococcus aureus and MRSA carriage in Shenzhen, 2015
| Microbial carriage of mothers |
S. aureus
|
MRSA
|
||||||
|---|---|---|---|---|---|---|---|---|
| RR (95% CI) | aRR (95% CI)a | P-valuea | NNH (95% CI)a | RR (95% CI) | aRR (95% CI)b | P-valueb | NNH (95% CI)b | |
| Nasal carriage | 2.7 (1.6–4.4) | 2.8 (1.6–4.8) | <0.001 | 25 (15–71) | 1.7 (0.4–7.5) | 2.0 (0.4–8.9) | 0.066 | 138 (–54 to 30) |
| Vaginal carriage | 6.9 (4.1–11.7) | 7.1 (4.1–12.4) | <0.001 | 6 (4–11) | 2.6 (0.6–11.3) | 2.9 (0.6–12.9) | 0.067 | 23 (–21 to 7) |
| Both nasal and vaginal carriage | 10.2 (4.6–22.5) | 9.6 (4.2–22.4) | <0.001 | 8 (4–46) | 4.2 (0.6–31.6) | 5.5 (0.7–41.9) | 0.056 | 42 (–39 to 12) |
Notes:
a
Adjusted for vaginal delivery, frequency of vaginal examination after hospitalization, premature rupture of membranes, and gender of neonates.
b
Adjusted for the frequency of vaginal examination after hospitalization.
Abbreviations: MRSA, methicillin-resistant S. aureus; RR, relative risk; aRR, adjusted relative risk; CI, confidence interval; NNH, number needed to harm.