Table 1.
Stability and diversity measures of different genotyping methods
| Attribute | Value for indicated genotyping method |
||||||
|---|---|---|---|---|---|---|---|
| spa sequence typing | TGP | PFGE-80 | MLVA | SCCmec subtyping | PDORF | PFGE-100 | |
| No. (%) of pairs differing | 3 (4) | 5 (6) | 5 (6) | 9 (11) | 11 (14) | 17 (21) | 31 (38) |
| % probability of no change at 6 mo (95% CI) | 95 (82–99) | 95 (82–99) | 91 (76–96) | 88 (74–95) | 82 (68–90) | 71 (55–82) | 58 (43–70) |
| Simpson's index of diversity (95% CI) | 0.48 (0.35–0.62) | 0.47 (0.34–0.60) | 0.61 (0.50–0.73) | 0.70 (0.57–0.82) | 0.72 (0.64–0.79) | 0.89 (0.85–0.94) | 0.88 (0.81–0.94) |
| Log rank χ2 test statistic (P value) for comparison with PFGE-100 | 40.2 (<0.0001) | 34.8 (<0.0001) | 35.0 (<0.0001) | 25.1 (<0.0001) | 21.2 (<0.0001) | 10.3 (0.03) | |