Table 3.
Colonization and transmission of S. aureus by study
| US N= 139 |
NL N= 61 |
AU N= 96 |
Pooled N= 296 |
||||||
|---|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | P | N | % | |
| S. aureuscolonization among index patients | |||||||||
| Colonized with S. aureus | 37* | 27 | 41* | 67 | 44 | 46 | <.001 | 122 | 41 |
| Colonized with MRSA | 22* | 16 | 38* | 62 | 25 | 26 | <.001 | 85 | 29 |
| Colonized with MSSA | 15 | 11 | 3 | 5 | 19 | 20 | 0.06 | 37 | 13 |
| S. aureuscolonization among non-index HHMs | |||||||||
| Colonized with S. aureus | 89 | 64 | 23 | 38 | 52 | 54 | <.01 | 164 | 55 |
| Colonized with MRSA | 39 | 28 | 13 | 21 | 24 | 25 | 0.59 | 76 | 26 |
| Colonized with MSSA | 63 | 45 | 12* | 20 | 39 | 41 | <.01 | 114 | 39 |
| S. aureustransmission of the clinical isolate | |||||||||
| ≥1 non-index HHM colonized with the clinical strain | 37 | 27 | 13 | 21 | 17 | 18 | 0.27 | 67 | 23 |
Notes:
P-value refers to test for heterogeneity between studies. Chi-square tests were used for categorical variables and ANOVA for continuous variables.
*
indicates standardized residuals are>1.96 or <-1.96, thus indicating which specific study is accounting for observed heterogeneity between studies
HHM = household member