Table 2.
Association § between non-contamination and all factors of interest
| Factor | Value of factor | Odds ratio § | 95% CI odds ratio | Overall effect p-value |
|---|---|---|---|---|
| Transport medium §§ | 7H9 | 1.579 | 0.632 - 3.944 | 0.008 |
| dry | 57.675 | 23.704 - 140.334 | ||
| Amies (ref. level) | 1.000 | |||
| Decontamination medium | OA_1h | 0.715 | 0.362 - 1.412 | 0.266 |
| OA_30min | 0.540 | 0.260 - 1.122 | ||
| NaOH_20min | 0.879 | 0.383 - 2.016 | ||
| NaOH_10min (ref. level) | 1.000 | |||
| Inoculation media §§ | LJ | 0.264 | 0.162 - 0.429 | <0.001 |
| LJ_PANTA (ref. level) | 1.000 | |||
| Swab qPCR Ct value | for an increase in 1 unit Ct | 0.992 | 0.978 - 1.006 | 0.236 |
| Time from sampling to inoculation | for an increase in 10 days | 0.606 | ||
| Interaction of transport medium and days from sampling to inoculation | when 7H9§§§ | 0.982 | 0.824 - 1.171 | 0.007 |
| when dry§§§ | 1.167 | 1.032 - 1.321 | ||
| when Amies§§§ (ref. level) | 0.799 | 0.643 - 0.993 |
§Adjusted for random effects of the patient and swab.
§§An interaction (p-value: <0.001) between transport medium and inoculation media was observed.
§§§For an increase in 10 days from the mean number of days from sampling to inoculation.