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Table 3 GBI subscale results by timing of obliteration

From: Mastoidectomy and mastoid obliteration with autologous bone graft: a quality of life study

  Entire cohort Primary obliteration Secondary obliteration Mann–Whitney test (Primary vs Secondary)
Overall (mean) 22 19 31 0.14
General subscale (mean) 23 20 34 0.10
Physical subscale (mean) 25 21 39 0.15
Social subscale (mean) 22 22 25 0.43