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Table 4 Paired t-test statistics for H&N QOL instrument

From: Voice restoration following total laryngectomy by tracheoesophageal prosthesis: Effect on patients' quality of life and voice handicap in Jordan

  Paired Difference    
QOL pairs Mean Difference SD Standard Error of Mean 95% Confidence t df P
     Lower Upper    
Comm1 – Comm2 -66.83 20.44 5.90 -79.83 -53.85 -11.3 11 <0.001
Swal1 – Swal2 -6.25 10.28 2.97 -12.78 0.28 -2.1 11 0.059
Pain1 – Pain2 -5.73 9.41 2.72 -11.71 0.25 -2.1 11 0.059
Emot1 – Emot2 -30.56 23.53 6.79 -45.50 -15.61 -4.5 11 0.001
QOL1 – QOL2 -25.42 10.50 3.03 -32.09 -18.74 -8.4 11 <0.001