Table 3.
Contamination of samples and plate segments in both study comparisons
| Comparison and combination | Result | Total no. (%) of plate results | No. (%) of contaminated plate segments inoculated with indicated 10-fold sputum dilution |
Total | |||||
|---|---|---|---|---|---|---|---|---|---|
| Neat | 10−1 | 10−2 | 10−3 | 10−4 | 10−5 | ||||
| AmB10 vs AmB30 | |||||||||
| 7H10-AmB10 | No contamination | 93 (73) | 163 (64) | 190 (75) | 199 (79) | 228 (90) | 232 (91) | 232 (91) | 1,244 (81) |
| Fungal contamination | 28 (22) | 71 (28) | 46 (18) | 41 (16) | 24 (9) | 22 (9) | 22 (9) | 226 (15) | |
| Bacterial contamination | 6 (5) | 20 (8) | 18 (7) | 14 (6) | 2 (1) | 0 | 0 | 54 (4) | |
| 7H10-AmB30 | No contamination | 112 (88) | 203 (84) | 213 (88) | 218 (90) | 232 (96) | 232 (96) | 234 (97) | 1,331 (92) |
| Fungal contamination | 11 (8) | 27 (11) | 19 (8) | 16 (7) | 9 (4) | 9 (4) | 7 (3) | 87 (6) | |
| Bacterial contamination | 4 (4) | 11 (5) | 9 (4) | 7(3) | 0 | 0 | 0 | 27 (2) | |
| AmB30 vs AmBC | |||||||||
| 7H11-AmB30 | No contamination | 76 (75) | 128 (62) | 137 (66) | 151 (73) | 172 (83) | 174 (84) | 177 (86) | 939 (76) |
| Fungal contamination | 21 (20) | 54 (26) | 46 (22) | 45 (22) | 32 (15) | 30 (14) | 29 (14) | 236 (19) | |
| Bacterial contamination | 5 (5) | 25 (12) | 24 (12) | 11 (5) | 3 (1) | 3 (1) | 1 (0) | 67 (5) | |
| 7H11-AmBC | No contamination | 87 (85) | 157 (77) | 168 (82) | 181 (89) | 195 (96) | 196 (96) | 197 (97) | 1,094 (89) |
| Fungal contamination | 11 (11) | 21 (10) | 12 (6) | 9 (4) | 6 (3) | 5 (2) | 6 (3) | 59 (5) | |
| Bacterial contamination | 4 (4) | 26 (13) | 24 (12) | 14 (7) | 3 (1) | 3 (1) | 1 (0) | 71 (6) | |