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Table 3 Group comparison of retrospective rating of postoperative improvement in nasal obstruction

From: Evaluation of strategies for increasing response rates to postal questionnaires in quality control of nasal septal surgery

Retrospective rating of postoperative improvement Total N = 99 (%) Group A, N = 47 (%) Group B, N = 52 (%) p value*
Completely improved 13 (13.1) 6 (12.8) 7 (13.5) p = 0.45
Substantially improved 51 (51.5) 22 (46.8) 29 (55.8)  
Somewhat improved 32 (32.3) 18 (38.3) 14 (26.9)  
Unchanged 3 (3.0) 1 (2.1) 2 (3.8)  
Worse 0 0 0  
  1. Group A standard routine, Group B modified routine
  2. * Mann–Whitney U