Table 1.
Characteristics of the Eligible Studies.
| First Author (Year) |
Participants (cases/controls) |
Duration (years) |
Mean Age (years) (cases/controls) |
Hearing Test Method |
|---|---|---|---|---|
| Rance (2016)35 | 19/19 | 7.2 ± 3.7 | 13.4 ± 2.8/13.5 ± 3.0 | PTA/ABR/OAE |
| Hou (2015)28 | 50/50 | N/A | 25.56/27.56 | PTA/ABR/OAE |
| ALDajani (2015)36 | 70/30 | N/A | 9/10.8 | PTA/ABR/OAE |
| Botelho (2014)27 | 40/40 | 6.75 ± 3.64 | 14.12 ± 2.55/13.98 ± 2.48 | PTA/OAE |
| Rance (2014)39 | 10/10 | N/A | N/A | PTA/ABR/OAE |
| Abd EI Dayem (2014)31 | 40/40 | 5.3 ± 3.6 | 12.1 ± 2.9 | PTA/OAE |
| Dąbrowski (2011)32 | 31/26 | 4.6 ± 2.7 | 29.1 ± 7.1/30.3 ± 7.8 | PTA/ABR/OAE |
| Okhovat (2011)34 | 100/100 | N/A | 12.19 ± 3.1 | PTA |
| Elamin (2005)29 | 63/63 | 1.5–9.0 | N/A | PTA |
| Tóth (2003)30 | 15/15 | 23.0 ± 2.6 | N/A | PTA/BAEP |
| Ottaviania (2002)37 | 60/ 58 | 17.5 ± 8.9 | 31.0 ± 6.23/29.1 ± 5.75 | PTA/ABR/OAE |
| Lisowska (2001)38 | 41/33 | N/A | 33 | ABR/OAE |
| Seidl (1996)40, a | 32/32 | 6 ± 2.6 | 13.5 ± 2 | BARP |
| Seidl (1996)40, b | 21/ 21 | < 2 | 9.7 ± 3.5 | BARP |
| Çelik (1996)11 | 75/40 | 15 ± 7 | 45.3/43.8 | PTA |
| Virtaniemi (1994)33 | 50/50 | N/A | 25.56/27.56 | PTA/ABR/OAE |
a
Disease duration ≥ 2 years.
b
Disease duration < 2 years.
ABR = auditory brainstem evoked responses, BAEP = brainstem auditory evoked potentials; N/A = not available; OAE = otoacoustic emissions; PTA = pure‐tone audiometry.