Volume 8, Number 5—May 2002
Research
Sentinel Surveillance: A Reliable Way To Track Antibiotic Resistance in Communities?
Table 1
Ability of sentinel groups of three, four, and five laboratories to estimate accurately %PNSP, 1998a
Area | Labs with >10 isolates (total labs) | Actual %PNSP | Total isolates | Percent of sentinel groups within 5 percentage points of actual %PNSP |
||
---|---|---|---|---|---|---|
3 labs (no. of groups; overall range in %PNSP) | 4 labs (no. of groups; overall range in %PNSP) | 5 labs (no. of groups; overall range in %PNSP) | ||||
CA | 5 (9) | 15 | 181 | 100 (10; 12-17) | 100 (5; 13-16) | 100 (1; NA) |
CT | 25 (32) | 18 | 681 | 73 (2,300; 2-31) | 81 (12,650;4-30) | 87 (53,130;6-30) |
GA | 18 (34) | 33 | 860 | 45 (816; 19-51) | 52 (3,060; 20-49) | 58 (8,568; 21-48) |
MD | 20 (26) | 22 | 579 | 60 (1,140; 8-40) | 68 (4,845; 9-38) | 74 (15,504; 10-37) |
MN | 12 (24) | 20 | 470 | 78 (220; 11-30) | 88 (495; 12-29) | 94 (792; 14-28) |
NY | 5 (19) | 15 | 191 | 80 (10; 9-15) | 100 (5; 10-14) | 100 (1; NA) |
OR | 6 (13) | 21 | 228 | 80 (20; 14-25) | 93 (15; 14-23) | 100 (6; 17-21) |
TN | 20 (30) | 35 | 419 | 37 (1,140; 11-62) | 40 (4,845; 13-59) | 44 (15,504;14-57) |
aIn Active Bacterial Core surveillance areas.
%PNSP, percent of penicillin-nonsusceptible invasive pneumococcal isolates.