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Table 3 Association between questions with lowest practice variation (IQV < 0.4) and organizational factors

From: Mechanical ventilation and clinical practice heterogeneity in intensive care units: a multicenter case-vignette study

Organizational factor Questions with lower IQV (< 0.4) Questions with higher IQV (> 0.6)
Correlation coefficient 95% CI Correlation coefficient 95% CI
Annual volume of ICU admissions 0.17 (-0.15; 0.46) 0.32 (0.01; 0.58)
Annual volume of MV admissions 0.04 (-0.35; 0.28) 0.38 (0.07; 0.63)
Annual volume of patients per physician 0.19 (-0.13; 0.49) -0.06 (-0.36; 0.26)
Beds-to-physician ratio -0.28 (-0.55; 0.03) -0.10 (-0.40; 0.22)