Table 1. Baseline characteristics of persons with a positive NTM culture.
| NTM total (n = 925) | NTM and QFT(n = 112¤) | NTM, no QFT (n = 758) | p value* | |
| median age (IQR) | 60 (37) | 55 (33,5) | 62 (38,7) | P = 0.036** |
| sex (male %) | 51 | 56 | 50 | P>0.1*** |
| NTM species n(%) | ||||
| M. abscessus-chelonae | 44 (5) | 4 (4) | 40 (5) | P>0.1 |
| MAC | 460 (50) | 48 (43) | 392 (52) | P>0.1 |
| M. celatum | 28 (3) | 5 (4) | 23 (3) | P>0.1 |
| M. fortuitum-peregrinum | 24 (3) | 2 (2) | 22 (3) | P>0.1 |
| M. gordonae | 169 (18) | 38 (34) | 118 (16) | P<0.001 |
| M. kansasii | 18 (2) | 2 (2) | 15 (2) | P>0.5 |
| M. malmoense | 42 (5) | 6 (5) | 33 (4) | P>0.1 |
| M. marinum | 21 (2) | 1 (1) | 18 (2) | P>0.1 |
| M. xenopi | 41 (4) | 3 (3) | 34 (4) | P>0.1 |
| Other species | 78 (7)**** | 3 (3) | 63 (7) | P>0.1 |
¤
n = 55 persons excluded, see Figure 1.
*Comparison between “NTM and QFT” and “NTM, no QFT”.
**Mann-Withney U test.
***Chi squared.
****In this category persons with more than 1 NTM species isolated are included (n = 8).
Total percentages add up to 99–101 because of rounding.
Table 1 shows the distribution of NTMs isolated in the different groups of participants with or without a matching QFT.