Table 4.

Evaluation of the experimental data obtained by PFGE of MRSA: pattern similarity (mean values) and range of the total number of bands per strain by epidemiological group

Center identificationIn-house procedureStandardized procedure
Identical isolates (1 to 5)Clustered isolates (6–10)Independent isolates (11 to 20)Identical isolates (1 to 5)Clustered isolates (6 to 10)Independent isolates (11 to 20)
%na %n%n%n%n%n
1100159615–166413–16100159214–165312–15
2100168715–162613–1698158914–153111–16
3100159315–166712–1696139213–145911–15
4100168816–172713–18b
5100159314–153810–15
6100168916–172214–18
710010–12949–10308–1298128711–125510–14
8100168716–173412–17921662173114–18
998167913–145213–16941494136712–14
10100166814–163011–181001585144410–15
111001514–1612–181001515–1711–18
12100178516–174916–18
Overall range (no. of fragment)10–179–178–1812–1611–1710–18
Avg99.887.239.997.385.948.6
SD0.67.615.02.810.212.8
  • a n: number of bands.

  • b —, no data or nonevaluable data.