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Table 2 ETT size by age vs ETT size by US (MTSD)

From: Routine use of ultrasonography in prediction of uncuffed endotracheal tube size in pediatric patients

  Mean ± SD P value
Size by age form 5.52 ± 0.6 0.759
Size by US (MTSD) 5.50 ± 0.6  
  Pearson correlation P value
Size by age form and size by US (MTSD) 0.913 < 0.001
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