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Table 2 ANOVA post-hoc pairwise comparisons of OWT-VAC, Mini-VAC, and Mini-VAC-Instill regarding vacuum duration and length of hospital stay

From: Short-term and long-term outcomes of intrathoracic vacuum therapy of empyema in debilitated patients

  Vacuum duration in daysa
Pairwise therapy comparisons Estimated marginal means Difference (95 %-CI) p-value
OWT-VAC vs Mini-VAC 20.3 vs 12.4 7.9 (1.0; 14.8) 0.026
OWT-VAC vs Mini-VAC-Instill 20.3 vs 10.4 9.9 (4.27; 15.5) 0.001
Mini-VAC vs Mini-VAC-Instill 12.4 vs 10.4 2.0 (−4.9; 8.8) 0.565
  Postoperative length of stay in hospital in daysb
Pairwise therapy comparisons Estimated marginal means Difference (95 %-CI) p-value
OWT-VAC vs Mini-VAC 24.4 vs 23.7 0.7 (−8.7; 10.1) 0.881
OWT-VAC vs Mini-VAC-Instill 24.4 vs 15.6 8.8 (1.1; 16.6) 0.027
Mini-VAC vs Mini-VAC-Instill 23.7 vs 15.6 8.2 (−0.8; 17.1) 0.074
  1. 95 %-CI 95 % confidence interval
  2. aMain effects: Vacuum duration (p = 0.003), surgery indication (p = 0.968); bMain effects: Vacuum duration (p = 0.052), surgery indication (p = 0.744)