Table 1 Patient characteristics (n = 58)
From: Mastoidectomy and mastoid obliteration with autologous bone graft: a quality of life study
|  | Total (n = 58) | Primary (n = 46) | Secondary (n = 12) |
|---|---|---|---|
Average age (std dev) in years | 40 (16) | 43 (16) | 30 (14) |
Male | 31 | 24 | 7 |
Female | 27 | 22 | 5 |
Right ears | 28 | 24 | 4 |
Left ears | 30 | 22 | 8 |