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Table 2 Association § between non-contamination and all factors of interest

From: Primary cultivation: factors affecting contamination and Mycobacterium ulcerans growth after long turnover time of clinical specimens

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

  1. §Adjusted for random effects of the patient and swab.
  2. §§An interaction (p-value: <0.001) between transport medium and inoculation media was observed.
  3. §§§For an increase in 10 days from the mean number of days from sampling to inoculation.