Table 2.

Participant characteristics.

Citation	Number of participants	Age range (average) in years	Gender NR	Hearing loss type and severity	Previous HA use
Auriemmo et al. (2009)	10	6.3–13.5 (10)	NR	Sloping SNHL with hearing   thresholds no worse than   60 dB HL in the low   frequencies, but above   70 dB HL above 4000 Hz.	Experienced digital HA users;   one participant with frequency   compression HA; nine children   used FM systems along with   their HAs in the classroom.
Glista et al. (2009)	11	6–17 (11)	4F/7M	Sloping, SNHL Moderately severe-profound   in better ear 1 participant may have   mixed loss.	Nine digital HAs users, one   analog HA user; one   inexperienced HA user
Miller-Hansen et al. (2003)	19	5.7–21.6 (12.5)	NR	Bilateral SNHL 6 with profound 6 with severe 4 with moderate-severe 3 with mild-moderate	Previous users of CP HAs
Smith et al. (2009)	6	9–14	3F/3M	Sloping high frequency SNHL	Previous HA users
Wolfe et al. (2010, 2011)	15	6–12 (10.4)	NR	Mild to moderate SNHL in   low frequencies and   moderate to   moderately severe loss   in high frequencies	All children had previously   worn digital HAs. None   had experience with   frequency-lowering   technology.

Note. CP = conventional processing; dB = decibel; F = female; FM = frequency-modulation; HA = hearing aid; HL = hearing level; Hz = Hertz; M = male; SNHL = sensorineural hearing loss.