TABLE 2.
Concordance data between PLEX‐ID and standard methods
| Variable | Data (%) |
|---|---|
| Concordance | |
| Overall concordance | 45/101 (45) |
| Concordance when excluding discordance for commensal oral flora | 67/101 (66) |
| Overall concordance among specimens from patients diagnosed with pneumonia post‐bronchoscopy | 12/41 (30) |
| Concordance among specimens from patients diagnosed with pneumonia post‐bronchoscopy, excluding commensal flora | 22/41 (54) |
| Discordance only at species level (genus identified by both methods) | 2/101 (2) |
| Undetected organisms and resistance | |
| Among all organisms detected, number not detected by PLEX‐ID | 43/218 (20) |
| Among all organisms detected, number not detected by SM | 46/218 (21) |
| Among all organisms detected by SM, the number not detected by PLEX‐ID |
|
| Among all organisms detected by PLEX‐ID, the number not detected by SM | |
| Among non‐commensals detected by SM, number not detected by PLEX‐ID |
|
| Among non‐commensals detected by PLEX‐ID, number not detected by SM | |
| Among fungi detected by SM, number not detected by PLEX‐ID |
|
| Among fungi detected by PLEX‐ID, number not detected by SM | |
| Organisms most often ‘missed’ by PLEX‐ID, n (%) | |
| Pneumocystis jirovecii | 5/7 (71) |
| Actinomyces odontolyticus | 4/18 (22) |
| Haemophilus influenzae | 2/7 (29) |
| Escherichia coli | 2/5 (40) |
| Organisms most often ‘missed’ by standard methods, n (%) | |
| Candida albicans | 8/16 (50) |
| Streptococcus spp. | 5/15 (33) |
| Streptococcus pneumoniae | 5/6 (83) |
| Streptococcus group mitis (excluding S. pneumoniae) | 3/22 (14) |
| ‘Missed’ organisms, fungi, n (%) | |
| PLEX‐ID | 6/36 (17) |
| SM | 15/36 (42), p 0.030 |
| mecA identification (%)a | |
| PLEX‐ID | 7/7 (100) |
| SM | 2/7 (29) |
SM, standard methods.
a
No other resistance genes were identified throughout the study.