Table 3 Treatment group minimum inhibitory concentration ratio (MR) estimates for E. coli accelerated failure time models (zinc vs placebo).

From: Impact of zinc supplementation on phenotypic antimicrobial resistance of fecal commensal bacteria from pre-weaned dairy calves

Model

Coefficient (SE)

MIC ratio, MR (SE)

p-value

95% CI

AZI (azithromycin)a

− 0.23 (0.21)

0.80 (0.16)

0.273

0.53, 1.19

CIP (ciprofloxacin)b

− 1.80 (0.90)

0.17 (0.15)

0.046

0.028, 0.97

NAL (nalidixic acid)b

− 1.28 (0.33)

0.28 (0.09)

0.000

0.15, 0.53

AXO (ceftriaxone)c

− 0.056 (0.34)

0.95 (0.32)

0.867

0.49, 1.83

  1. aModel adjusted for categorical days from last spectinomycin treatment (0 days, 3–5 days, 6–8 days, 9–10 days).
  2. bModel adjusted for number of spectinomycin doses received (0, 1, or 2 doses).
  3. cModel adjusted for binary spectinomycin treatment variable (received or not) and days on/from diarrhea onset/cure.
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