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. 1999 Jan;37(1):215–217. doi: 10.1128/jcm.37.1.215-217.1999

TABLE 1.

Interlaboratory variation in minor errors and agreement within 1 log2 dilution of E test performed on SB-MHA and HB-MHA compared with BMD

Country No. of isolates tested No. (%) of isolates showing:
Minor interpretative errors
Agreement within 1 log2 dilution
SB-MHA HB-MHA SB-MHA HB-MHA
A 122 5 (4.1) 3 (2.4) 95 (77.9) 115 (94.3)
B 244 34 (13.9) 29 (11.9) 138 (56.6) 159 (65.2)
C 107 46 (43.0) 40 (37.4) 53 (49.5) 52 (48.6)
D 150 15 (10.0) 14 (9.3) 119 (79.3) 128 (85.3)
E 120 15 (12.5) 15 (12.5) 110 (91.7) 117 (97.5)
Total 743 115 (15.5) 101 (13.6) 515 (69.3) 571 (76.9)