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Table 3 Model of generalized logistic estimation equations for evaluation considered good for the variables of the skin observation scale performed by the external rater and the study participant for the different alcohol-based formulations

From: Glycerol content within the WHO ethanol-based handrub formulation: balancing tolerability with antimicrobial efficacy

Glycerol Concentration Proportion with a good outcome Model Coefficients Odds Ratio (95% CI)a
External rater evaluationb
 Glycerol 0% 0.4 −0.92 0.20–0.79
 Glycerol 0.5% 2.4 0.88 1.12–5.15
 Glycerol 0.75% 0.9 −0.10 0.46–1.77
 Glycerol 1.45% 1
Self-assessmentc
 Glycerol 0% 0.23 −1.47 0.11–0.49
 Glycerol 0.5% 1.12 0.11 0.53–2.36
 Glycerol 0.75% 0.73 −0.32 0.35–1.51
 Glycerol 1.45% 1
  1. a95% CI = 95% confidence interval
  2. bExternal rater evaluation: defined as “good” when all four ratings from rater evaluation were 0 (no redness, no scaling, no fissures, and no irritation)
  3. cSelf-assessment: defined as “good” when all five ratings from self-evaluation were 6 or 7 (normal or perfect)