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Table 4 Mann-Whitney U for T_first and SpO2_Lowest

From: Apnoeic oxygenation by nasal cannula during airway management in children undergoing general anaesthesia: a pilot randomised controlled trial

Variable Median (IQR) Mann-Whitney U
Control group Intervention group P-value
T_first (sec) 39 (19–64) 34 (21–55) U = 108.5
p = 0.870
SpO2_Lowest (%) 99 (98–100) 100 (100–100) U = 45
p = 0.004*
  1. T_first = Time to first event, sec = Seconds, SpO2_Lowest = lowest SpO2 observed during airway management, IQR = Interquartile Range
  2. *P-value < 0.05, indicating a significant difference between the groups